This edition is the labor of many enthousiastic scientists who were invited to teach at a NATO Advanced Study Institute on the "Spectroscopy of Inorganic Bioactivators" which took place on August 20 -30, 1988 at Club Poseidon, Loutraki, Greece. In this book the subjects were taught through several well prepared lectures. These lectures stretch the fact that scientific knowledge is the painfully gathered product of many wonderful human minds. I made an attempt to divide the lectures into separate chapters, however, there is interaction among the lectures, as I hope the book will show. First,...