The 1990-1991 Gulf war : IUCN's response
1992
Price, Andrew |
WWF International
Conservation des ressources naturelles dans l'Aïr-Ténéré, République du Niger : rapport annuel 1987-1988 (traduction faite du texte original anglais)
1988
Newby, John E. |
Ngorongoro Conservation Area : aerial survey of livestock and wildlife, 23-25 October 1987 : preliminary results of SRF survey
1988
Perkin, Scott |
Campbell, Kenneth L. |
Marine turtles in Baluchistan : report on an aerial survey, 9-11 September 1988 with notes on wetland sites and a proposed marine turtle conservation project
1989
Groombridge, Brian |
Elephant action plan
1989