This handbook gives a complete and concise description of the up-to-date knowledge of nuclear and radiochemsitry and applications in the various fields of science. I is based on teaching courses and on research for over 40 years. The book is addressed to any researcher whishing sound knowledge about the properties of matter, be it a chemist, a physicist, a medical doctor, a mineralogist or a biologist. They will all find it a valuable source of information about the principles and applications of nuclear and radiochemistry. Research in radiochemistry includes: Study of radioactice matter in nature, investigation of radioactive transmutations by chemical methods, chemistry of radioelements etc. Applications include: Radionuclides in geo- and cosmochemistry, dating by nuclear methods, radioanalysis, Mössbaur spectroscopy and related methods, behaviour of natural and man-made radionuclides in the environment, dosimetry and radiation protection. All subjects are presented clearly and comprehensibly, and in logical sequence. Detailed derivations of equations are avoided and relevant information is compiled in tables. The recent edition of the multi-coloured Karlsruhe 'Chart of the Nuclides' is included. Clearly a standard work by an author with extensive experience in research and teaching.