The 30 papers cover molecular modeling and computerized techniques, physicochemical properties, acute toxicity and mutagenicity, and statistical validation and risk assessment. They were peer-reviewed and revised between presentation and publication, and both report new information and review and synthesize the current state of the science. Among the topics are a new approach to estimating three-dimensional similarity that incorporates molecular flexibility, calculating molar crystalline and liquid volumes and their temperature dependence, identifying mechanisms of the toxic action of phenols to Tetrahymena pyriformis from molecular descriptors, and discriminating statistically equivalent variables in quantitative structure- activity relationships. Annotation c. by Book News, Inc., Portland, Or. Read Less