Classificação da Biblioteca do Congresso dos EUA (LCC)QK640-707

adventure(7) agriculture(23) anatomy(25) animals(25) apples(14) art(26) bees(20) big book(44) biology(238) botany(645) children(76) children's(112) children's fiction(6) children's literature(23) children's picture book(10) Creation(5) cycles(20) design(9) differences(15) early reader(40) earth(15) easy reader(38) ecology(34) education(23) educational(8) elementary(14) environment(54) evolution(20) experiments(19) fall(900) fantasy(5) farm(5) flowers(237) folklore(7) food(57) forest(6) garden(192) gardening(257) gardens(54) general science(9) Grade 2(23) green(8) growing(82) growth(47) guide(7) history(26) horticulture(25) informational(160) informative(12) insects(17) juvenile(45) juvenile literature(23) juvenile non-fiction(19) kids(28) leaves(748) life cycle(169) life science(96) literary nonfiction(13) literature(7) math(5) music(5) natural science(11) natural world(9) nature(612) nuts(16) outdoors(8) photographs(17) photography(52) physiology(6) picture book(378) pink(5) poetry(14) preschool(12) primary(16) reader(22) reference(40) research(5) roots(68) school(29) science(1,618) science fiction(6) science nonfiction(21) seasonal(12) seed(59) shapes(6) song(11) songs(9) spring(166) storybook(6) tree(23) trees(367) vocabulary(9) weather(48) winter(5) writing(5) youth(5)