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>Report upon cotton insects, prepared under the direction of the commissioner of agriculture in pursuance of an act of Congress approved June 19, 1878. By J. Henry Comstock, entomologist to the Department of agriculture.
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Report upon cotton insects, prepared under the direction of the commissioner of agriculture in pursuance of an act of Congress approved June 19, 1878. By J. Henry Comstock, entomologist to the Department of agriculture.
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机译:报告棉花昆虫,根据批准的,在农业专员的指导下,追求了1878年6月19日批准的。作者:J. Henry Comstock,昆虫学家到农业部。