Clasificación de la Biblioteca del CongresoQC687.T68

18th century(7) 19th century(9) academic(5) animals(6) art(16) astrophysics(12) biography(63) biology(7) business(6) chemistry(28) children(47) children's(36) children's literature(5) classic(5) communication(5) computer science(11) computing(5) culture(5) curriculum(9) dictionary(5) digital(8) discovery(7) diy(5) education(34) educational(6) elementary(14) energy(99) engineering(100) England(5) Enlightenment(8) experiments(135) fusion(63) general relativity(6) general science(17) graduate(7) graphic novel(12) Hall(6) high school(5) history(176) history of science(109) how things work(6) how-to(7) humor(5) informational(9) inventions(16) inventors(10) juvenile(25) juvenile non-fiction(13) kids(16) language arts(5) learning(6) light(30) literature(5) manga(15) math(90) middle school(7) nanotechnology(6) natural science(23) nature(18) ocean(7) painting(6) physique(17) picture book(30) popular science(30) primary(6) programming(6) projects(7) quantum(22) quantum mechanics(55) quantum physics(30) radio(27) reference(76) relativity(14) school(11) science(1,788) science and technology(9) science nonfiction(12) scientists(14) teaching(7) tech(16) television(5) theoretical(17) theoretical physics(7) usa(16) weather(11)