Classificação da Biblioteca do Congresso dos EUA (LCC)QK481.L5

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)