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Retrospective studies show that HIV was present in humans as early as a.) 1981 b.)1970's c.)1959 d.)1937

Retrospective studies show that HIV was present in humans as early as a.) 1981 b.)1970's c.)1959 d.)1937
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1 vote
Retrospective studies show that HIV was present in humans as early as

a.) 1981
b.)1970's
c.)1959
d.)1937

asked
User Grill
by
9.1k points

1 Answer

5 votes
1959 ..................
answered
User Ahmad Arslan
by
7.9k points
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