This yearbook covers the period from January 1975 to May 1976. It reviews the International Union for Conservation of Nature and Natural Resources' (IUCN) conservation strategy for the coming years, important international conservation treaties, IUCN organizational reforms, and the financial report for 1975. Conservation discussions include tropical rain forests, marine conservation, and threatened animals and plants. The international agreements closely associated with IUCN activities are the Endangered Species Convention, the Polar Bear Agreement, the World Heritage Convention, and the Wetlands Convention. Appendices contain organizational material including membership lists, publications, budget information, and conferences and meetings. (MA)