Búsqueda por clasificación
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518- Ecoinfo
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519- Philosophy
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520- Educational sciences
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521- Sociology
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522- History of science and technology
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522-1 General points
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522-57 Mathematical sciences and techniques
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522-75 Physical sciences and techniques
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522-171 Technology
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522-255 Earth sciences
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522-336 Life sciences
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522-337 Natural sciences
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522-340 Breeding; Food
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522-359 Biology
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522-360 General points
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522-361 Palaeontology; evolution; genetics
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522-366 Botany
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522-379 Zoology
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522-394 Anatomy; physiology
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522-404 Biochemistry; biophysics; cytology
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522-409 Sexology
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522-412 Obstetrics; Gynecology
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522-415 Microbiology; parasitology
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522-420 Medicine; surgery; pharmacy
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522-421 History of medicine
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522-422 General points
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522-423 Antiquity
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522-424 East and Far East
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522-425 Arabs
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522-425A Pre-Columbian America.
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522-426 Middle Ages.
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522-427 Renaissance
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522-428 17th century
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522-429 18th century
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522-430 19th century
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522-431 20th century
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522-431A 21th century.
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522-422 General points
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522-432 Hygiene; hospitals
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522-448 Physicians
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522-459 Pathology
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522-493 Surgery
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522-509 Therapeutics
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522-523 Dentistry
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522-524 Veterinary medicine
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522-421 History of medicine
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522-360 General points
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522-337 Natural sciences
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522-1 General points
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523- History and sciences of litterature
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524- Linguistics
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525- Prehistory and protohistory
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526- Art and archaeology
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527- History and sciences of religions
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528- Administrative science
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529- Ethnology
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531- Geography
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533- Latin america
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540- Repertory of art and archaeology.
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600-
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603- Computer processing and legal sciences
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610-
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616- Company management
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617- General economics
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731- Energy economics
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760- Public health. Hygiene.
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770- Psychology. Psychoanalysis. Psychiatry.
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790- Information and communication sciences