Klassifikation der Library of Congress [LCC] (USA)QL49.P2536

abc(732) Africa(1,495) animal behavior(287) animal rights(163) animal welfare(86) animals(20,578) art(647) autobiography(789) biography(3,141) biology(2,986) birds(1,876) bugs(226) butterflies(162) children(1,217) children's(1,748) children's literature(282) conservation(895) creatures(86) desert(307) dolphins(149) early reader(189) earth(148) easy reader(227) ecology(1,084) ecosystems(204) educational(167) elementary(170) endangered species(568) environment(883) environmentalism(135) evolution(367) extinction(347) fish(1,300) forest(220) gardening(356) geography(354) guidebook(184) history(1,131) human-animal relationships(83) humor(902) informational(885) informative(136) insects(858) juvenile(460) juvenile non-fiction(233) kids(387) life science(422) Life Sciences(130) lions(152) literary nonfiction(119) lizards(95) mammals(935) marine(163) marine life(342) monsters(221) natural science(249) natural world(103) naturalist(80) nature(6,874) nature writing(126) North America(231) ocean(2,884) oceanography(152) oceans(708) penguins(187) photographs(382) photography(727) picture book(3,000) polar bears(181) pond(105) ponds(93) pop-up(248) preschool(159) primary(181) primates(190) reader(180) reference(1,888) reptiles(624) science(11,542) science nonfiction(108) scientists(237) sea(469) sea life(443) snakes(260) South America(179) spiders(166) tigers(105) travel(1,409) turtles(135) whales(298) wild animals(328) wildlife(2,186) zoo(1,487) zoo animals(291)