_Annual Report to Congress of the Atomic Energy Commission_, available from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. (January 1964), 512 pp., $1.75. _Fundamental Nuclear Energy Research_ (annual report), available from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C. (December 1963), 412 pp., $2.50. _Atomic Energy_ (including experiments), Irene Jaworski and Alexander Joseph, Harcourt, Brace and World, Inc., New York, 1961, 218 pp., $4.95. _Laboratory Experiments with Radioisotopes for High School Science Demonstrations_, Samuel Schenberg, available from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C., 1958, 59 pp., $0.35. _Teaching with Radioisotopes_, U. S. Government Printing Office, out of print but possibly available in school libraries or science departments. _Experiments with Radioactivity_, National Science Teachers Association, Washington, D. C., 1957, 20 pp., $0.50. _Atomic Energy_, Boy Scouts of America Merit Badge Series, available from Official Boy Scout Distributors (at local retail stores) or from Boy Scouts of America, National Supply Service, New Brunswick, New Jersey 08903. _Scientific Instruments You Can Make_, Helen M. Davis, Science Service, 1719 N Street N. W., Washington, D. C., 1959, 253 pp., $2.00. _Experiments with Atomics_, Nelson Beeler and Franklin Branley, Thomas Y. Crowell Company, New York, 1954, 160 pp., $2.50. _Atomic Experiments for Boys_, Raymond F. Yates, Harper and Row Publishers, Inc., New York, 1952, 132 pp., $2.50. _Atomic Energy and Civil Defense_ (Price List 84) a listing of related publications available from the Superintendent of Documents, U. S. Government Printing Office, Washington, D. C., free. Preparation of Scientific and Technical Reports _How to Write Scientific and Technical Papers_, Sam F. Trelease, Williams & Wilkins Company, Baltimore, Maryland, 1958, 185 pp., $3.25. _Writing Useful Reports_, Robert E. Tuttle and C. A. Brown, Appleton-Century-Crofts, Inc., New York, 1956, 635 pp., $4.75. _Technical Reporting_, Joseph N. Ulman, Jr., and J. R. Gould, Holt, Rinehart & Winston, Inc., New York, 1959, 289 pp., regular edition $6.75; textbook edition $5.00. _Report Writers’ Handbook_, Charles E. Van Hagan, Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1961, 276 pp., regular edition $9.35; textbook edition $7.00. APPENDIX IV WORKING WITH RADIATION AND RADIOACTIVE MATERIALS