Clasificación de la Biblioteca del CongresoS521.N6

19th century(217) African American(193) agriculture(3,623) animal husbandry(53) animals(495) autobiography(177) biographies(125) biography(1,509) biology(158) black history(105) botany(188) Canada(95) children(231) children's(249) climate(54) climate change(89) commerce(53) community(115) conservation(322) cooking(230) country life(271) country living(142) countryside(64) crops(54) culture(104) diy(179) earth(87) ecology(797) economics(148) England(193) environment(909) environmental(86) environmental studies(30) environmentalism(176) farm(1,170) farm animals(165) farm life(269) farmer(43) farmers(98) food(1,931) food politics(57) food production(42) food writing(80) garden(446) gardening(3,246) gardens(134) geography(136) geology(134) green(118) guide(73) health(181) history(1,600) homesteading(777) horticulture(208) how-to(166) informational(83) inventors(186) Iowa(62) juvenile(108) land(54) livestock(139) natural resources(51) nature(915) nature writing(43) nutrition(107) organic(341) photographs(78) picture book(396) poultry(31) reference(496) research(108) rural(123) rural life(179) rural living(38) science(1,073) scientists(256) self-reliance(98) self-sufficiency(568) simple living(64) social history(76) social studies(92) standards(41) survival(90) sustainability(863) sustainable living(143) tools(89) trees(102) usa(251) usda(165) Vermont(74) Virginia(89) worms(64)