Classification de la Bibliothèque du CongrèsQK203.O5

agriculture(277) American West(111) art(1,002) biography(456) biology(2,172) botany(11,085) Britain(216) California(468) Canada(333) conservation(80) cooking(285) desert(124) deserts(56) drawing(179) Eastern United States(63) ecology(819) environment(320) Europe(152) evolution(158) exploration(132) flowers(3,631) folklore(242) food(963) garden(755) gardening(3,282) gardens(380) growing(139) guide(643) guidebook(355) Hawaii(174) health(374) herbalism(450) history(1,121) history of science(110) homesteading(66) horticulture(666) informational(130) leaves(110) life cycle(219) life science(177) medicine(332) natural science(144) natural world(59) nature(5,833) nature writing(77) New Mexico(103) North America(822) Northwest(68) outdoors(226) photographs(115) photography(217) picture book(504) poison(104) prairie(105) reference(2,808) roots(50) science(4,776) seed(109) self-sufficiency(107) Southwest(142) spring(349) survival(202) Texas(327) travel(290) trees(1,988) tropical(45) usa(470) Washington(110) wildlife(133)