By Tamarin, Robert H. . Genre Rodents / Behavior / Rodents / Anatomy / Microtus and 1 more . Names microtus / ochrogaster / mus / data / malachius montanus and 23593 more

Names america / mexico / age / arizona / area and 2957 more

By Simpson, George Gaylord, 1902-1984 . Genre Evolution (Biology) / Evolucao (Teoria) . Names life / animals / animal / type / reptiles and 2197 more

By Arey, Leslie Brainerd, 1891- . Genre Histology / Histology / Laboratory manuals . Names type / tunica / thymus / simple / adult and 248 more

By Halsted, Byron David, 1852-1918 . Genre Agriculture . Names wood / horse / soil / animal / animals and 590 more

Genre Science / Periodicals . Names thorax / island / didemnum / spicules / coral and 3705 more

By Small, Henry Beaumont, 1831- / Taylor, John, fl. 1866- . Genre Canada / Guidebooks / Zoology / Canada . Names called / island / fish / rock / town and 1091 more

By Knuth, Paul, 1854-1899 / Knuth, Paul, 1854-1899 / Muller, Hermann, 1829-1883 / Ainsworth Davis, J. R. (James Richard), 1861-1934 . Genre Fertilization of plants . Names flowers / flower / xx / pollen / insects and 14509 more

By Gray, Asa, 1810-1888 / Sullivant, William Starling, 1803-1873 . Genre n-us--- / Botany / United States . Names leaves / flowers / calyx / fruit / corolla and 18426 more

By Jardine, William, Sir, 1800-1874 . Genre Mammals . Names insects / thorax / order / called / lepidoptera and 2249 more