Proceedings of the Entomological Society of Philadelphia.

v. 3 (1864)

Proceedings of the Entomological Society of Philadelphia.

v. 5, Memoir (1865)

Proceedings of the Entomological Society of Philadelphia.

v. 2 (1863-1864)

Proceedings of the Entomological Society of Philadelphia.

v. 4 (1865)

Proceedings of the Academy of Natural Sciences of Philadelphia.

v.72 (1920)

Proceedings of the Entomological Society of Philadelphia.

v. 6 (1866-1867)

Entomological news, and proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia.

v. 14 (1903)

Contributions from the Botanical Laboratory of the University of Pennsylvania.

1, 1892-1897

Contributions from the Botanical Laboratory of the University of Pennsylvania.

5, 1919-1920

Monography of the family Unionidae, or Naiades of Lamarck (fresh water bivalve shells,) of North America, : illustrated by figures drawn on stone from nature. / by T.A. Conrad ...

1

American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. By Henry C. McCook.

v.3

American spiders and their spinningwork. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. By Henry C. McCook.

v.2

Occasional papers of the Museum of Natural History, the University of Kansas.

no.64 (1977)

Miscellaneous publication - University of Kansas, Museum of Natural History.

no.53 (1971)