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 ).

In the famous long scroll Along the River During the Qingming Festival painted by Zhang Zeduan ( 1085 – 1145 AD ) during the Song Dynasty ( 960 – 1297 AD ), a suanpan is clearly seen lying beside an account book and doctor's prescriptions on the counter of an apothecary's ( Feibao ).

During the period of the Iberian Union ( 1580 – 1640 ), Portugal lost influence and power and made new enemies.

* 1793 – During the French Revolution, the Committee of Public Safety becomes the executive organ of the republic.

* 1911 – During the Battle of Deçiq, Dedë Gjon Luli Dedvukaj, leader of the Malësori Albanians, raises the Albanian flag in the town of Tuzi, Montenegro, for the first time after George Kastrioti ( Skenderbeg ).

During January – February 2007, Armenia ’ s trade with the European Union totaled $ 200 million.

During January – February 2007, Armenia ’ s trade with Russia and other former Soviet republics was $ 205. 6 million ( double the amount from the same period the previous year ), making them the country ’ s number one trading partner.

* 1925 – During the Communist St Nedelya Church assault in Sofia, 150 are killed and 500 are wounded.

During the Tokugawa period ( 1600 – 1868 ) the Ainu became increasingly involved in trade with Japanese who controlled the southern portion of the island that is now called Hokkaido.

During the Invasion of the Kuril Islands, Akira Nakamura ( b. 1897 ) was captured by the Soviet army and his elder son Takeshi Nakamura ( 1925 – 1945 ) was killed in the battle.

* 1958 – During the Cold War, American Van Cliburn wins the inaugural International Tchaikovsky Competition in Moscow.

During his 72 years of Imamat ( 1885 – 1957 ), the community celebrated his Golden ( 1937 ), Diamond ( 1946 ) and Platinum ( 1954 ) Jubilees.

* 1864 – During the American Civil War, Union forces led by General William T. Sherman launch an assault on Atlanta, Georgia.

During the 4th century BC, there may well have been some 250, 000 – 300, 000 people in Attica.

During the turn of the 20th century British Israelites carried out some excavations of the Hill of Tara in Ireland looking for the Ark of the Covenant – the Royal Society of Antiquaries of Ireland campaigned successfully to have them stopped before they destroyed the hill.

* 1242 – During a battle on the ice of Lake Peipus, Russian forces, led by Alexander Nevsky, rebuff an invasion attempt by the Teutonic Knights.

During the Helvetic Republic ( 1798 – 1803 ), the county of Baden, the Freie Ämter and the region known as the Kelleramt were combined into the Canton of Baden.

During 1823 – 1931 the grown settlement was known as Ust-Abakanskoye, 1914 – 1925: Abakan, 1925 – 1931: Khakassk.

* Mann, Horace, K. The Lives of the Popes in the Early Middle Ages, Vol III: The Popes During the Carolingian Empire, 858 – 891.

During the summer months ( April – September ), dogs are banned from the Silver Sands but they are allowed all year round at the Black Sands.

During the period 1825 – 1863 a sheep market was held at a site in Castle Street, to stop the sale of sheep on the streets of the town.

* 1983 – During STS-6, astronauts Story Musgrave and Don Peterson perform the first space shuttle spacewalk.

" During 1903 – 1930, he published his critical edition of Manilius's Astronomicon in five volumes.