The Weak Hydrogen Bond In Structural Chemistry and Biology (International Union of Crystallography, Monographs on Crystallography, 9) By Gautam R. Desiraju (University of Hyderabad) and Thomas Steiner (Freie Universität Berlin). Oxford University Press: Oxford and New York. 1999. xiv + 507 pp. $150. ISBN 0-19-850252-4.