These two volumes are unique in that they take into consideration the enormous progress made in the field over the last few years. Expert knowledge is given by Professor Runnebaum, whose department was appointed WHO Collaboration Center for Research in Human Reproduction. These extensively illustrated books provide detailed information on the function and detection of new hormones and growth factors, on therapy with female sexual hormones, on environmental factors, and on the diagnostic and surgical techniques employed in reproductive medicine. This English edition of a standard German reference has been expanded to include an appendix containing a comprehensive list of pharmaceutical agents used in hormone therapy, including international and trade names and compositions.