This bibliography is intended for students and laymen who wish to gain information about environmental problems facing the world today and consists of more than 250 descriptive annotations of primarily nontechnical materials. Entries are listed once, alphabetically by author, in one of the following broad subject areas: General Books on Environment, Urban Environment, Ecology-Natural History, Pesticides and Pollution, The American Scene, Population and Food Production, Science and the Future, Conservation-General, Resource Management and Conservation, Wildlife, Journals, and Reference. An author index completes the bibliography. (JH)