Chemists and biochemists who need to understand and interpret the results of X-ray diffraction analyses of crystals will benefit greatly from this book. It acquaints them with the general principles of crystal structure analysis so that they can critically appraise the literature and extract the structural information they need. The book also makes them aware of the vast amount of structural information resulting from this method of analysis. This book gives a striking illustration of the importance of crystallography to chemistry and biology. Numerous examples facilitate comprehension.