February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

This new book provides a sound summary of the rapidly expanding body of knowledge on ground water pollution sources, evaluation and control. It is used to plan and implement ground water quality management programs, and also may be used as a text. The first three (introductory) chapters are about ground water quality, its importance, its management, and information sources.