Clasificación de la Biblioteca del CongresoQD33.2

18th century(48) 19th century(94) alchemists(26) alchemy(1,999) art(241) biographies(178) biography(1,816) biology(141) chemicals(14) chemistry(6,755) children(76) children's(79) college(24) cultural history(31) curriculum(38) dictionaries(29) dictionary(87) discoveries(13) discovery(15) education(119) educational(20) energy(28) engineering(36) Enlightenment(22) esoteric(170) esotericism(107) Europe(50) experiments(184) general science(26) Golden Dawn(27) green(77) handbook(37) hermetic(44) Hermeticism(166) high school(68) history(1,312) history of ideas(19) history of science(616) inorganic chemistry(62) inventors(32) juvenile(47) juvenile non-fiction(36) Lab(28) magic(186) math(113) matter(21) medicine(60) medieval(44) Middle Ages(36) Miscellanea(18) mysticism(160) natural philosophy(11) natural science(353) occult(455) occultism(97) organic(19) physicist(13) Poland(114) popular science(99) professional(56) pseudoscience(14) psychology(176) radioactive(9) reference(692) religion(114) research(24) Rosicrucian(15) safety(24) school(59) science(5,131) science and technology(28) science biography(25) science education(10) scientific(25) scientific biography(23) scientists(313) spirituality(120) study aids(11) study guide(47) symbolism(77) teaching(25) text(37) undergrad(11) women(129) women in history(24) women's history(23)