Conserving the African elephant : a working document
1988
Wildlife Conservation International, US
Elephant action plan
1989
The conservation biology of tortoises : the results of Operation Tortoise, a worldwide project
1989
Swingland, Ian R. (Ian Richard) |
Klemens, Michael W. |
African elephants and rhinos : status survey and conservation action plan
1990
Cumming, David H. M. |
Du Toit, R. F. |
Stuart, S. N. |
