During the Vietnam War, between 1962 and 1971, the United States military sprayed nearly of material containing chemical herbicides and defoliants mixed with jet fuel in Vietnam, eastern Laos and parts of Cambodia, as part of Operation Ranch Hand.

During the Vietnam War, between 1962 and 1971, the United States military sprayed nearly of chemical herbicides and defoliants in Vietnam, eastern Laos and parts of Cambodia, as part of the aerial defoliation program known as Operation Ranch Hand.

During 1971 and 1972 B evolved into " New B " and then C, with the preprocessor being added in 1972 and early 1973 at the urging of Alan Snyder.

During the Information Age ( circa 1971 – 1991 ), the Knowledge Age ( circa 1991 to 2002 ), and the Intangible Economy ( 2002 – present ) many see the primary factors of production as having become less concrete.

During the show's peak in popularity, Hee Haw often competed in syndication against The Lawrence Welk Show, a long-running ABC program which had also been canceled in 1971, also in an attempt to purge the networks of older demographic-leaning programs.

During the next 25 years, only two jaguars were documented in the United States, both killed: a large male shot in 1971 near the Santa Cruz River by two teenage duck hunters, and another male cornered by hounds in the Dos Cabezas Mountains in 1986.

During the summer of 1971, Colmerauer and Kowalski discovered that the clausal form of logic could be used to represent formal grammars and that resolution theorem provers could be used for parsing.

* 1971 – During a severe thunderstorm over Washington state, a hijacker calling himself Dan Cooper ( AKA D. B. Cooper ) parachutes from a Northwest Orient Airlines plane with $ 200, 000 in ransom money.

During this period, other related organizations were also formed, including the Academy of Parapsychology and Medicine ( 1970 ), the Institute of Parascience ( 1971 ), the Academy of Religion and Psychical Research, the Institute of Noetic Sciences ( 1973 ), the International Kirlian Research Association ( 1975 ), and the Princeton Engineering Anomalies Research Laboratory ( 1979 ).

During the 1970s and the 1980s the track developed some of the best French drivers of the time, and hosted the Formula One French Grand Prix on many occasions, the first of which was the 1971 French Grand Prix.

During this period, in late 1971, she reunited with Schickele to record two tracks, " Rejoice in the Sun " and " Silent Running " for the science-fiction film, Silent Running.

During the Vietnam war, between 1962 and 1971, the United States military sprayed of chemical herbicides and defoliants in Vietnam, eastern Laos and parts of Cambodia, as part of Operation Ranch Hand.

During his career, he pitched for the New York Giants ( 1952 – 1956 ), St. Louis Cardinals ( 1957 ), Cleveland Indians ( 1957 – 1958 ), Baltimore Orioles ( 1958 – 1962 ), Chicago White Sox ( 1963 – 1968 ), California Angels ( 1969 ), Atlanta Braves ( 1969 – 1970 ; 1971 ), Chicago Cubs ( 1970 ), and Los Angeles Dodgers ( 1971 – 1972 ).

During the economic crisis of 1971, Mansfield was not afraid to reach across the aisle to help the economy.

During the installation of a " sound and light " show in 1971, workers discovered the entrance to a tunnel and cave system underneath the Pyramid of the Sun.

During the last season of The Ed Sullivan Show, Sullivan dedicated the entire February 21, 1971 episode to the fifth anniversary of The 5th Dimension.

During the band's mid-period, he wrote many cheerfully eccentric — and often ironic — celebrations of traditional English culture and living: " Village Green " ( 1966 ), " Afternoon Tea " and " Autumn Almanac " ( both 1967 ), " The Last of the Steam-Powered Trains " ( 1968 ), " Victoria " ( 1969 ), " Have a Cuppa Tea " ( 1971 ) and " Cricket " ( 1973 ).

During a 17-year baseball career, he pitched from 1955 to 1971, most notably with the Detroit Tigers and the Philadelphia Phillies.

During this period Norman wrote at least three comedies: X-Mass ( 1971 ), Also Sprach Kazoostra ( 1972 ) and The Gospel According To Moresell, Moresold ( 1973 ).

During 1971 occupants of addresses began to receive notification of their postcode.

During the visit, a documentary film about Shankar named Raga was shot by Howard Worth, and released in 1971.

During these times, the village and police department were run from a local motel until 1971 when village trustees bought two portable buildings.

During the local government reform of 1971 Järna, Nås and Äppelbo were amalgamated to form the new Vansbro Municipality.

During the Eleventh Five-Year Plan, the country imported some 42 million tons of grain annually, almost twice as much as during the Tenth Five-Year Plan and three times as much as during the Ninth Five-Year Plan ( 1971 – 75 ).

During this period, financial problems again almost forced Attlee to quit politics, as his wife was ill and there was then no separate salary for the Leader of the Opposition.

During this time, Munch received many commissions for portraits and prints which improved his usually precarious financial condition.

During this period he re-established contact with his brother Conrad for numerous practical and financial matters, disclosing some of his inner feelings in the process.

During the next few years, his financial situation remained bad.

During that period international financial institutions played a critical role in Georgia's budgetary calculations.

During Borgrán's brief time in office, he had agreed to a United States proposal to invite a United States financial adviser to Honduras.

During this time, it has grown to become one of the most significant financial and cultural capitals of the world.

During the truce of 1206 – 1208, John focused on building up his financial and military resources in preparation for another attempt to recapture Normandy.

During the first two decades of independence, Mali received major technical and financial support from the former Soviet Union, China, and their allies, especially in the area of radio and television broadcasting.

During the 1980s, Ford gained another 20-percent financial stake.

During the financial crisis of 2007 – 2010, several Keynesian economists such as James Galbraith and Joseph Stiglitz blamed the free market philosophy of Friedman and the Chicago school for the economic turmoil.

During the 1990s, Pakistan began an ongoing project to rebuild all national highways throughout the country specifically to important financial, cargo and textile centers.

During the 2007-2012 global financial crisis in the United States, the neologism " pessimism porn " was coined to describe the alleged eschatological and survivalist thrill some people derive from predicting, reading and fantasizing about the collapse of civil society through the destruction of the world's economic system.

During the economic reforms being implemented after the financial crisis, the information technology ( IT ) sector was one of several that was targeted and considered to be an important factor in the recovery of the nation ’ s economy.

During the 19th and early 20th centuries, Bankalar Caddesi ( Banks Street ) in Istanbul was the financial center of the Ottoman Empire, where the headquarters of the Ottoman Central Bank ( established as the Bank-ı Osmanî in 1856, and later reorganized as the Bank-ı Osmanî-i Şahane in 1863 ) and the Ottoman Stock Exchange ( 1866 ) were located.

During the 1930s Lucie Bigelow Rosen was also taken up with the theremin and together with her husband Walter Bigelow Rosen provided both financial and artistic support to the development and popularisation of the instrument.

During his time in North Africa, he found himself in financial difficulties and was forced to mortgage his estates to his brother.

During the war, Wilson focused on diplomacy and financial considerations, leaving the waging of the war itself primarily in the hands of the Army.

During the 1980s, Arafat received financial assistance from Libya, Iraq and Saudi Arabia, which allowed him to reconstruct the badly battered PLO.

During this era, development of the financial district stagnated, and Wall Street " paid a heavy price " and " became something of a backwater in American life.

During the recession of 2008 – 2010, many of these firms went out of business or were bought up at firesale prices by other financial firms.

During the Seventies West Germany was able to weather the global financial storm far better than almost all the other developed countries, with unemployment and inflation kept at comparatively low levels.

During the period of economic decline, smuggling had been one of the few lucrative sources of employment, and recent laws which imposed stringent financial penalties ( with hard labour for non-payment ) were unpopular.

During the 17th century, further extensive repairs were carried out, in spite of a poor financial situation following the Civil War.

During this period, Fallot offered financial assistance to Proudhon if he came to Paris to study philosophy.