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As a result of the industrial revolution, man's technological achievements have been truly great, increasing the quality of life to almost unimagined proportions; but all this progress has not been accomplished without equally un imagined health risks. Sufficiently diagnostic short-term assay procedures have been developed in recent years for us to determine that there are mutagenic agents among thou sands of chemicals to which the human population is exposed today. These chemicals were not significantly present prior to the indus trial revolution. As of today, there are no procedures available which have been adequately demonstrated to assess individual sus ceptibility to genotoxic exposure...
This is a detailed survey, replete with photographs and diagrams, of the field artillery used by both sides in the Civil War. In paperback for the first time, the book provides technical descriptions of the artillery (bore, weight, range, etc.), ordnance purchases, and inspection reports. Appendixes provide information on surviving artillery pieces and their current locations in museums and national parks.
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Composed of the Report of the director and other administrative officers, together with occasional contributions on scientific subjects. Beginning in 1933 the annual report of the director was published in its journal.