African elephants and contraception.
Pimm
S L
SL
Center for Environmental Research and Conservation, Columbia University,  New York, New York 10027, USA. stuartpimm@aol.com
van Aarde
R J
RJ
D000349:Africa; D000818:Animals; D000835:Animals, Wild; D003269:Contraception, Immunologic / Q000662:veterinary*; D004606:Elephants / Q000502:physiology*; D005260:Female; D008297:Male; D011157:Population Dynamics; D011247:Pregnancy