This book, the Fifth Edition of a classic work on spectroscopy, concentrates on the practical aspect of using spectroscopic techniques to solve structural problems. It is written at a level that is suitable for an advanced undergraduate or graduate course in applied spectroscopy, but will also give practising chemists a valuable overview of the subject, as well as a good introduction to new techniques (2D NMR and recently introduced methods of producing ions for mass spectrometry). It is a resou