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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522-76 History
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522-87 Cosmology; matter, space, time
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522-93 Astronomy
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522-114 Mechanics. Acoustics
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522-121 Thermic sciences; Thermodynamics; states of the matter
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522-126 Metrology
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522-127 Optics
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522-135 Electromagnetism; electronics; electrotechnology
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522-136 Electromagnetism
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522-137 Electricity
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522-138 Electronics
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522-139 Electrotechnology
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522-136 Electromagnetism
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522-145 Microphysics
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522-146 Chemistry
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522-76 History
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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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522-1 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