Hymenoptera of America north of Mexico
Subtitle: synoptic catalog, second supplement
By: prepared by the staff and collaborators of the Hymenoptera Unit, Insect Identification and Parasite Introduction Research Branch, Entomology Research Division, Agricultural Research Service, under the direction of Karl V. Krombein and B.D. Burks.
Contributors: Krombein, Karl V.; Burks, B. D.
Series: Agriculture monograph -- no. 2; Agriculture monograph -- no. 2.
Publisher: U.S. Dept. of Agriculture
Published: 1967
Place of publication: Washington, D.C
Subjects: Hymenoptera -- North America -- Catalogs.
Genres: Catalogs.