By Brooks, William Keith, 1848-1908 . Genre Zoology / Periodicals . Names fish / animal / animals / producers / life and 2786 more

Genre n-us-pa / Philadelphia (Pa.) / Learned institutions and societies / Science / Periodicals . Names american / rock / called / life / area and 3634 more

Genre Forests and forestry / Pennsylvania / Periodicals / Forests and forestry / Societies, etc and 4 more . Names leaves / area / areas / soil / life and 737 more

Genre Natural history / Periodicals . Names type / apex / forsythiopsis baker / cascogaster fullawayi baker / chironia flexuosa baker and 6905 more

Genre Entomology / Periodicals . Names thorax / sp / nansenia sp / navicula sp / nemichthys sp and 23004 more

Genre Forests and forestry / Pennsylvania / Periodicals / Forests and forestry / Societies, etc and 4 more . Names leaves / areas / life / wood / area and 652 more

Genre Farm buildings / Maintenance and repair / Periodicals / Agriculture / Periodicals and 6 more . Names soil / wheat / called / none / animals and 5207 more

Genre Academy of Natural Sciences of Philadelphia / Periodicals / Natural history / Periodicals / Science and 1 more . Names thorax / insects / passerina / sylvia / animal and 3988 more

Genre Entomology / Periodicals . Names thorax / apex / sp / basal / nansenia sp and 33440 more

Genre Aquarium fishes / Periodicals / Aquariums / Periodicals . Names fish / life / plants / daphnia / animals and 272 more