Abstract
The World of Insects. By Carl D. Duncan and Gayle Pickwell. McGrawHill Book Co., New york, N. Y., 409 pp., 194 illustrations, $3.50. - The North American Bees of the genus Osmia. By Grace A. Sandhouse. Memoir of the Entomological Society of Washington, Number I, Washington, D. C., August 15, 1939, p. 167. Price $3.00; bound. For sale by the
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