Clasificación de la Biblioteca del CongresoT201-342

19th century(10) advertising(24) American(8) animals(6) art(41) art deco(10) biography(42) brands(6) Buddhism(6) business(49) careers(5) children(18) children's(17) children's literature(6) cookbook(9) creativity(26) culture(5) design(227) dictionaries(7) dictionary(6) dreams(6) economics(11) education(9) engineering(119) entrepreneurship(10) etymology(6) evolution(7) experiments(5) food(5) George Washington(5) glass(5) graphic design(76) graphics(5) guide(11) Hall(7) heraldry(5) history(226) history of science(14) how-to(10) humor(28) ideas(8) industrial revolution(6) informational(9) innovation(35) international(5) internet(54) inventing(6) invention(67) inventions(222) inventors(124) juvenile(9) language(8) law(20) legal(6) library science(5) Logos(53) machines(9) marketing(16) material culture(11) mlis(23) music(7) names(9) photography(6) picture book(39) popular science(11) problem solving(9) reference(62) research(7) science(267) scientists(7) search(19) searching(76) signs and symbols(8) social history(7) social studies(13) sociology(6) tech(5) technique(31) tools(33) trademarks(69) travel(6) typography(11) usa(8) youth(6)