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1951
1953
1963
1966
1970
1971
1972
1973
1974
1975
1976
1920s
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1970s
1980s
1990s
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This category has only the following subcategory.
B
Biotechnology companies established in 1971
(2 P)
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1970s in biotechnology
1971 in biology
Biotechnology by year
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