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A Revision of the Drabas of Western North America

by Hitchcock, C.L.

$ 16.00

A Revision of the Elephant-Shrews, Family Macroscelididae

by Corbet, G. B.

$ 10.00

A Revision of the Genera Melanolophia, Pherostesia, and Melanotesia (Lepidoptera, Geometridae)

by Rindge, Frederick

$ 12.00

A Revision of the Genus Viguiera

by Blake, S.F.

$ 8.00

A Revision of the Mesozoic Crocodilia of North America

by Mook, Charles C.

$ 24.00

A Revision of the North American Species of Euphorbia of the section Tithymalus occurring north of Mexico

by Norton, J.B.S.

$ 20.00

A Revision of the North American Species of Euphorbia of the section Tithymalus occurring north of Mexico

by Norton, J.B.S.

$ 16.00

A Revision of the Punctatus Group of African Typhlops (Reptilia: Serpentes)

by Laurent, R. F.

$ 10.00

A Second Century of Orchidaceous Plants A Second Century of Orchidaceous Plants

by Bateman, James

$ 5,500.00

A Study of Certain Plant and Animal Interrelations on a Native Prairie in Northwestern Minnesota

by Tester, John R. and Marshall, William H.

$ 8.00

A Study of the Fishes of the Southern Piedmont and Coastal Plain

by Fowler, Henry W.

$ 25.00

A Study of the Neotropical Finches of the genus Spinus

by Todd, W. E. Clyde

$ 10.00