Clasificación de la Biblioteca del CongresoTA401-492

analysis(11) archaeology(21) architecture(236) art(48) art history(8) botany(13) brick(6) buildings(14) business(11) chemistry(181) children(6) chocolate(5) civil(36) clay(13) college(5) computer science(7) conservation(35) construction(148) cracking(7) cultural history(7) cultural studies(6) culture(9) design(119) dictionaries(6) dictionary(7) digital(11) ecology(10) economics(6) educational(5) Egypt(6) energy(10) engineering(687) environment(16) experiments(17) factual(10) fashion(10) general science(16) geology(16) glass(49) Grade 2(7) handbook(78) history(166) history of science(17) how-to(9) innovation(6) inventions(5) light(5) manufacturing(18) material culture(12) math(52) matter(27) nanotechnology(119) natural science(5) nature(22) paint(5) painting(5) paper(16) photographs(9) photography(6) picture book(15) popular science(34) professional(6) reference(217) research(7) sand(14) school(10) science(756) science and technology(14) sculpture(9) selection(5) smart(9) standards(31) steel(30) stone(26) strength(10) stress(15) sustainability(29) tech(8) technique(13) testing(21) thermodynamics(16) trees(23) urban(51) usa(9) wood(141) woods(7)