This is a survey bibliography designed to familiarize those interested in planning with the problems, issues, institutional contexts, and substantive content of the broad area of planning that affects aspects of the physical environment whose modification by man has significant effects on social welfare. The bibliography is organized in three parts: (1) the nature of the decisionmaking milieu and process, (2) various approaches to this milieu and process, and (3) the examination of specific environmental problems. (Author/MLF)