_The Effects of Nuclear Weapons_, Samuel Glasstone (Ed.), U. S. Atomic Energy Commission, 1962 (revised edition), 730 pp., $3.00. Available from Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402. _Fallout from Nuclear Weapons Tests_, Hearings Before the Special Subcommittee on Radiation of the Joint Committee on Atomic Energy, 86th Congress, First Session, Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. 20402, 1959. Vol. I, 948 pp., $2.75; Vol. II, 1967 pp., $2.75; Vol. III, 2618 pp., $1.75. “Summary-Analysis of Hearings”, 42 pp., $0.15, is available only from the Office of the Joint Committee on Atomic Energy, Congress of the United States, Washington, D. C. 20510. _Bombs at Bikini_, W. A. Shurcliff, William H. Wise & Co., Inc., New York, 1947, 212 pp., $3.50. Out of print but available through libraries. Biological Effects of Radiation _Health Implications of Fallout from Nuclear Weapons Testing Through 1961_ (Report No. 3), Federal Radiation Council, Washington, D. C., May 1962, 10 pp., free. _Estimates and Evaluation of Fallout in the United States from Nuclear Weapons Testing Conducted Through 1962_ (Report No. 4), Federal Radiation Council, Washington, D. C., May 1963, 41 pp., $0.30. _Report of the United Nations Scientific Committee on the Effects of Atomic Radiation_, General Assembly, Seventeenth Session, Supplement No. 16 (A/5216), United Nations, International Documents Service, Columbia University Press, New York, 1962, 146 pp., $5.00. Radioactivity in the Environment _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 Footnotes [1]The biosphere is the living world, the sum of all living, interacting organisms. [2]Symbiosis is a condition in which two organisms or communities of organisms live together in close association, either on a basis of mutual benefit or of benefit to one only, with or without harm to the other. [3]Ionizing radiation is radiation that can cause damage to biological tissues. [4]Isotopes are variant forms of atoms of the same element. [5]Nuclides is a term used to describe all the forms of all the atoms. Radionuclides are radioactive nuclides.