Grasshoppers of the Mexicanus Group, Genus Melanoplus (Orthoptera: Acrididae).
Washington, D. C.: Smithsonian Institution, 1959. 6 x 9 3/4". 93 pp. Some pages still stuck together at top. B&w illustrations. Cover wrinkled, very slight stain on front. Corners very slightly bent. Natural history of insects. Very Good Pamphlet (Item ID: 20433)