A B C D E F G H I J-K L M N O P Q-R S T U V W-Y 0-9
close this section of the libraryHymenoptera of America north of Mexico(1)
View the documentHymenoptera of America north of Mexico : synoptic catalog, first supplement / prepared by the staff and collaborators of Hymenoptera Unit, Insect Identification and Parasite Introduction Laboratories, Entomology Research Division, Agricultural Research Service under the direction of Karl V. Krombein. Washington, D.C. : U.S. Dept. of Agriculture, 1958.