Clasificación de la Biblioteca del CongresoQE640-699

19th century(12) adventure(7) ancient(5) animals(29) anthropology(14) archaeology(36) biography(9) biology(36) Britain(5) Canada(7) children(14) children's(16) children's literature(6) Christian(5) climate(55) climate change(32) Creation(26) creationism(10) dinosaurs(9) earth(12) ecology(11) environment(19) Europe(5) evolution(57) exploration(6) extinction(20) fantasy(5) geography(39) geology(522) Glacial epoch(17) guidebook(5) hiking(9) historical fiction(13) history(152) history of science(44) ice age(193) informational(7) kids(5) literature(5) mammals(7) mammoths(11) maps(12) Michigan(7) middle grade(5) natural science(14) nature(29) New Mexico(13) North America(12) paleogeography(7) picture book(12) prehistoric(18) prehistory(44) reference(27) science(326) travel(11) usa(10) Washington(7) weather(10)