Biological diversity : international and national law aspects : papers submitted to a seminar held in Harare, Zimbabwe, November 1991 1991
National environment strategy for Jordan : a resource book of information and guidelines for action 1991 McEachern, John |
Botswana national conservation strategy : review of environmental provisions of existing legislation 1990 Takirambudde, Peter Nanyenya | Forster, Malcolm J. |