Report of the Ad Hoc Working Group on the work of its 1st session : [Ad Hoc Working Group of Experts on Biological Diversity, 1st session, Geneva, 16-18 November 1988]
标题Report of the Ad Hoc Working Group on the work of its 1st session : [Ad Hoc Working Group of Experts on Biological Diversity, 1st session, Geneva, 16-18 November 1988]
