A Description and Classification of the Final Instar Larvae of the Ichneumonidae (Insecta, Hymenoptera).
Washington, D. C.: Smithsonian Institution, 1959. 6 x 9 3/4". 115 pp. Tops of some pages still joined. B&w illustrations. Cover slitghtly stained on front, slightly soiled. Study of insect larvae. Very Good Pamphlet (Item ID: 20394)