Classificação da Biblioteca do Congresso dos EUA (LCC)QD

19th century(89) alchemists(25) alchemy(1,568) art(239) biographies(124) biography(1,787) biology(579) chemicals(25) chemistry(10,590) children(87) children's(108) college(40) dictionary(77) digital(50) discovery(39) dna(123) education(131) educational(37) energy(42) engineering(61) esoteric(137) esotericism(75) experiments(177) fire(35) general science(52) genetics(180) geology(138) gold(26) green(115) hermetic(32) Hermeticism(137) high school(60) history(1,812) history of science(856) inorganic chemistry(297) inventors(29) juvenile(63) juvenile non-fiction(48) Lab(30) magic(155) math(174) matter(30) medicine(98) Miscellanea(26) molecular biology(48) mysticism(155) nanotechnology(24) natural science(434) nature(65) occult(379) occultism(80) organic(139) physicist(12) Poland(114) popular science(233) professional(90) psychology(174) quantum(26) quantum mechanics(60) radioactive(9) reference(919) religion(104) school(83) science(8,811) science and technology(41) science biography(26) science nonfiction(33) scientific(27) scientific biography(16) scientists(319) spirituality(90) study guide(48) symbolism(69) symmetry(26) text(66) thermodynamics(81) undergrad(54) women(127) women in history(24)