Book ReviewThe Weak Hydrogen Bond: Applications to StructuralChemistry and Biology(International Union of CrystallographyMonographs on Crystallography, 9). By Gautam R. Desiraju(grdch@uohyd.ernet.in, University of Hyderabad) and ThomasSteiner (steiner@chemie.fu-berlin.de, Freie Universitat Berlin).Oxford University Press: Oxford, UK. 1999. 507pp. $ 150. ISBN0-19-850252-4.