'Well organized, beginning with the basic physics (nuclear structure, radioactivity, nucleosynthesis) then proceeding to how geochronometry actually works, including technical details of mass spectrometry and error analysis, then tackling the ways in which various isotope systems have been used to help understand the history of the earth and the solar system.' Doug Macdougall, Emeritus Professor of Earth Science, Scripps Institution of Oceanography, University of California, San Diego 'The book is, in my opinion, well organized. The subject matter is vast. I like the way in which the author has presented the physical fundamentals in the early chapters, then the applications to the evolution of the earth and other parts of the solar system later.' Marion E. Bickford, Professor Emeritus, Syracuse University, New York 'From what I have seen in the chapters, the book is well presented and I personally and many others in the field would welcome it.' Sir Robert Keith O'Nions, Former President and Rector of Imperial College London 'Gopalan wanted to produce a concise book for nonspecialist students and researchers. The book focuses on the basic concepts and principles of isotope dating. I have carefully read all the nine chapters. Undoubtedly, it is a valuable addition to the existing literature. ... Gopalan is a physicist by training, so his writing is pretty accurate and precise.' Bor-Ming Jahn, Former Distinguished Chair Professor for Research, Department of Geosciences, National Taiwan Unviersity 'An invaluable, affordable, handy text for the student and researcher and a welcome addition to the existing literature and more so which can be readily used as basic teaching material at the graduate-level by teachers at Universities teaching diverse subjects like planetary science, petrology, geochemistry and paleoclimate, to name a few, who could also develop it creatively for use as an advanced text for their individualistically-styled teaching needs.' Ravikant Vadlamani, Journal of the Geological Society of India 'Many texts on this subject tend to avoid the details and just present an equation that should be followed without explanation. At least here, Gopalan makes a good approach to explaining the why as well as the how. ... In all, it's a nice book. It fits easily on the shelf and is a good reference to the basic materials. I understand this book will eventually also be available in electronic form, which will make it more accessible to today's web-connected student.' A. J. Timothy Jull, Meteoritics & Planetary Science