Significant trade in wildlife : a review of selected species in CITES Appendix II 1988 Broad, Steven | Jenkins, Martin | Luxmoore, R. A. |
Natural resource accounts for Botswana : environmental accounting for a natural resource-based economy 1989 Perrings, Charles | Gilbert, Alison | Pearce, David W. (David William) | Harrison, Anne |
A national conservation strategy for Oman : workshop and consultations, 17-26 June 1989 : proposals for NCS initiation 1989