This book is an introductory text that describes the uses of the four spectroscopic methods: UV, IR, NMR and mass spectra in structure determination in organic chemistry. In addition to the material covered in the fourth edition there is extended coverage of 2-D NMR spectra, including the powerful techniques of TOCSY (total correlation spectroscopy) and [superscript 13]C-[superscript 1]H hetero-correlations, plus the introduction of ESI (electrospray ionization) and MALDI (matrix-assisted laser desorption). It is written for all scientists with an interest in the structure determination of organic molecules, and is an essential source of reference data.