A bibliography of the catalogs, lists, faunal and other papers on the butterflies of North America north of Mexico arranged by state and province (Lepidoptera: Rhopalocera) /

Por Field, William D., 1914-1992
Washington, D.C. : Smithsonian Institution Press : [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1974