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A monographic study of the subfamily Tiphiinae (Hymenoptera: Tiphiidae) of South America

By Allen, Harry W. (Harry Willis), 1892-. Washington, Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1972

By Allen, Harry W. (Harry Willis), 1892-. Washington, Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1972