APSCH_1482
Bob Durand, Peter Alden brushing off Allegheny Mound ants as E.O. Wilson watches with amusement, Snake Hill Biodiversity Days, Groton, MA. 2001
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APSCH_1483
Bob Durand, Peter Alden and E.O. Wilson looking at ants and ant hill, Snake Hill Biodiversity Days, Groton, MA 2001
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APALD_1486
E.O. Wilson at mound of Allegheny ants, Groton, MA 2001
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APHOG_1655
Pigeon; Operant conditioning, Harvard Lab
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