The book is in very good condition. The spine is bowed and there is some foxing to the top edge. The front and back endpapers are stamped with the previous owners name. The binding is sound and the pages are clean and unmarked. This highly successful manual has served for nearly three decades as the definitive guide to the safe use of radioactive materials. Completely revised and updated, the fourth edition presents a new dimension by adding coverage of nonionizing radiation, and is thus concerned with the entire field of radiation protection. The author takes the novel approach of introducing the whole range of energies possessed by particles and electromagnetic waves at the beginning of the text, thus integrating coverage of ionizing and nonionizing radiation rather than considering them as two separate disciplines. He goes on to cover the entire spectrum of radiation sources, including radionuclides, x-ray machines, accelerators, nuclear reactors, power lines, microwave towers, a