Genre Mollusks / Periodicals / Mollusca / Periodicals . Names data / area / sp / age / type and 10389 more

By Kindle, E. M. (Edward Martin), 1869-1940 . Genre n-us-ny / Paleontology / New York (State) / Paleontology / Devonian and 4 more . Names sp / filosa / microdon / fossils / eximia and 1033 more

By Osborn, Herbert, 1856-1954 . Genre Insects / Beneficial insects / Insect pests . Names insects / order / adult / life / pupa and 2737 more

By Hall, Winfield Scott. . Genre Physiology / Laboratory manuals / Physiology / Laboratory manuals . Names eye / animal / thorax / simple / lea and 901 more

By Chapman, Frank M. (Frank Michler), 1864-1945 . Genre Birds / United States / Photography of birds . Names camera / rock / island / lens / sea and 858 more

Genre n-us-pa / Philadelphia (Pa.) / Learned institutions and societies / Science / Periodicals . Names la / par / life / horse / order and 6483 more

By Tryon, George W. (George Washington), 1838-1888 / b. 1862 / 1838-1902 / 1874-1948 / 1889- . Genre Pictorial works / Pictorial works . Names type / lamella / pupillidae / umbilicus / basal and 4528 more

Genre Zoology . Names california / plankton / unidentified / sp / teredo and 6878 more

Genre Biology . Names american / animals / america / fish / plants and 9795 more