During the 1970s and 1990s, there was an epistemological shift away from the positivist traditions that had largely informed the discipline.

During the post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the 1960s and 1970s, the city gained a reputation as a center for liberal politics.

During the 1960s and 1970s, the city gained a reputation as an important center for liberal politics.

During much of the 1970s Roma's appearance in the top half of Serie A was sporadic.

During their heyday from the late 1970s to the mid-1990s, most BBSes were run as a hobby free of charge by the system operator ( or " SysOp "), while other BBSes charged their users a subscription fee for access, or were operated by a business as a means of supporting their customers.

During the 1970s the Air Force was at the apogee of its power, possessing at least 500 modern combat aircraft in its inventory.

During the early 1970s, Manchester United were no longer competing among the top teams in England, and at several stages were battling against relegation.

During the Orioles ' heyday in the 1970s, a club song, appropriately titled " Orioles Magic ", was composed, and played when the team ran out until Opening Day of 2008.

During the late 1970s and early 1980s, the site hosted Creative Time's landmark Art on the Beach sculpture exhibitions.

During the 1970s, he made guest-appearances on TV series such as Ironside, Insight, Barbary Coast, The Love Boat, Medical Center, four episodes of Love, American Style, Fantasy Island, and two episodes each of The Streets of San Francisco, and Rod Serling's Night Gallery.

" During the 1970s, widely different methods began to be seen as part of a new emerging discipline of computational chemistry.

During the 1970s the " small press " culture grew and diversified.

During the 1970s and 1980s it was also used to test the ability of containers of radioactive material to withstand impacts and other accidents.

During the 1970s and 1980s, the Bengals were a perennial playoff contender and they won AFC championships in and, but lost Super Bowls XVI and XXIII to the San Francisco 49ers.

During the 1960s and 1970s, the CPC experienced a significant ideological breakdown with the Communist Party of the Soviet Union under Nikita Khrushchev, and later, Leonid Brezhnev.

During the 1970s the relative number of communists in Republics of the Soviet Union was as follows:

During the 1970s, a growing number of Canadian stations pushed American channels off the systems, forcing several to expand beyond the original 12-channel system configurations.

During the 1970s producers started to reduce the quantity of white grapes in Chianti.

During the 1970s, modern dramatic directors made some of their first films.

During the Portuguese Colonial War in the 1960s and the 1970s, the Portuguese Army created an experimental horse platoon, to combat the guerrillas in eastern Angola.

During the late 1970s he acquired a large public audience as a critic of the then Labour government's disregard of civil liberties ; his writings from this time are collected in Writing By Candlelight ( 1980 ).

During the 1950s, 1960s and 1970s, several events occurred which raised the public awareness of harm to the environment caused by man.

During the 1960s and 1970s hundreds of fossils were found, particularly in East Africa in the regions of the Olduvai gorge and Lake Turkana.

During the 1970s and ' 80s, Cassandra B. Whyte did significant educational research studying locus of control as related to the academic achievement of students pursuing higher education coursework.

During the summer, Negroes began quietly patronizing previously segregated restaurants and lunch counters in downtown retail establishments.

During the Triassic Period (), the reptiles began to out-compete the amphibians, leading to a reduction in both the amphibians ' size and their importance in the biosphere.

During the 1960s the use of manual sign language grew greatly, but it was not until the 1980s that AAC began to emerge as an area in its own right.

During the Achaemenid Persian Empire, around 600 BC the Persians first began to use the abacus.

During this time Thomas Aquinas began to study under Albertus.

During that time Alboin turned his attention to Tuscany, but signs of factionalism among his supporters and Alboin's diminishing control over his army increasingly began to manifest themselves.

During his military governorship Johnson, seemingly, began to moderate his view of slavery.

During the first half of the 19th century, some of the songs African-Americans sang also began to appear in use for shipboard tasks, i. e. as shanties.

During the 19th century, the fields of science and art became increasingly intertwined as scientists such as Michael Faraday began to study the damaging effects of the environment to works of art.

During the 1960s, De Palma began making a living producing documentary films, notably The Responsive Eye, a 1966 movie about The Responsive Eye op-art exhibit curated by William Seitz for Museum of Modern Art in 1965.

During this stretch, the Orioles began to phase out their veteran infield by replacing Davey Johnson and Brooks Robinson with younger stars Bobby Grich and Doug DeCinces, respectively.

During the summer of 1959, Pasternak began writing The Blind Beauty, a trilogy of stage plays set before and after Alexander II's abolition of serfdom in Russia.

During the 1950s, however, Graham began distancing himself from the older fundamentalism and, in preparation for his 1957 New York Crusade, he sought broad ecumenical sponsorship.

During the 1960s the political atmosphere began to gradually change, and attention was once again directed to Chaplin's films instead of his political views.

During the second stage, writing began to appear on paper, papyrus, clay, wax, etc.

During the period of industrialization, food began to be mass produced, mass marketed, and standardized.

During the 18th century, jewelers began making pieces with inexpensive glass.

During World War II, because of paper shortages, the size of Sunday strips began to shrink.

During the middle of the 20th century the French reluctantly began to accede to reasonable requests, and in 1946 Comoros had become a separately administered colony from Madagascar.

During his reign the Empire conquered Thrace, Noricum, Pamphylia, Lycia and Judaea, and began the conquest of Britain.

During this time period, Marker began to travel around the world as a journalist and photographer, a vocation he would continue the rest of his life.

During this period, Alston began to teach the 10-year old Jacob Lawrence, whom he strongly influenced.

During the late Neolithic henge sites were constructed, single burials began to become more commonplace and by the Bronze Age it is possible that even where chambered cairns were still being built they had become the burial places of prominent individuals rather than of communities as a whole.

During this period Pissarro began to understand and appreciate the importance of expressing on canvas the beauties of nature without adulteration.