The types of hymenoptera in the Academy of Natural Sciences of Philadelphia other than those of Ezra T. Cresson.
Series: Memoirs of the American Entomological Society, no.5; Memoirs of the American Entomological Society -- no. 5.
Publisher: American Entomological Society
Published: 1928
Place of publication: Philadelphia
Language: eng
Number of pages: 90
Subjects: Hymenoptera.