_Environmental Radioactivity_, Merril Eisenbud, McGraw-Hill Book
Company, Inc., New York, 1963, 430 pp., $12.50.
_Proving Ground: An Account of the Radiobiological Studies in the
Pacific_, 1946-1961, Neal O. Hines, University of Washington Press,
Seattle, Washington, 1962, 366 pp., $6.75.
_Radioecology_, Proceedings of the First National Symposium on
Radioecology Held at Colorado State University, Fort Collins,
Colorado, September 10-15, 1961, Vincent Schultz and Alfred W.
Klement, Jr. (Eds.), published jointly by the Reinhold Publishing
Corporation, New York, and the American Institute of Biological