Selected for this listing of children's books are fiction and non-fiction books which add to an understanding of ecology, broadly considered here as the study of the interrelationships of organisms to each other and their environment. General ecology, natural resources, man and his environment, evolution and adaptation, appreciation, survival, biographies, picture books, and various fictional books comprise the topic headings. Each entry indicates author, title, publisher, price, and suggested grade level accompanied by a comprehensive annotation. Following the more than 100 notations is a sampling of materials for adult reading. (BL)