The genus Psorthaspis on the Mexican central plateau (Hymenoptera, Pompilidae). American Museum novitates ; no. 1662
David Rockefeller Mexican Expedition of the American Museum of Natural History (1947) Evans, Howard E. (Howard Ensign), 1922-2002 Hurd, Paul D. Jr. (Paul David), 1921-1982
Book
1954
English
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