Clasificación de la Biblioteca del CongresoQK

agriculture(334) animals(372) apples(364) art(947) bees(130) biology(3,535) botany(12,574) Britain(265) California(545) Canada(324) children(493) children's(602) conservation(143) cooking(356) desert(331) deserts(112) earth(163) Eastern United States(73) ecology(1,570) ecosystems(89) environment(794) Europe(213) evolution(248) fall(1,239) flowers(3,628) food(1,147) forest(224) garden(1,116) gardening(3,898) gardens(431) growing(345) growth(144) guide(903) guidebook(463) health(371) herbalism(412) history(1,053) horticulture(780) informational(560) leaves(1,025) life cycle(766) life science(410) medicine(310) natural science(214) natural world(95) nature(9,996) nature writing(120) North America(1,110) outdoors(308) photographs(174) photography(292) picture book(1,717) poison(109) prairie(103) reference(3,734) roots(130) science(9,685) science nonfiction(99) seed(215) self-sufficiency(106) Southwest(203) spring(729) sunflowers(85) survival(194) Texas(327) tree(369) trees(7,787) usa(548) wildlife(163)