Two-digit System
11 Logic
12 Mathematics
21 Astronomy, Astrophysics
22 Physics
23 Chemistry
24 Life Sciences
25 Earth and space science
31 Agricultural Sciences
32 Medical Sciences
33 Technological Sciences
51 Anthropology
52 Demography
53 Economic Sciences
54 Geography
55 History
56 Juridical Science and Law
57 Linguistics
58 Pedagogy
59 Political Science
61 Psychology
62 Sciences of Arts and Letters
63 Sociology
71 Ethics
72 Philosophy
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Famous quotes containing the word system:
“Intimately concerned as we are with the system of Europe, it does not follow that we are therefore called upon to mix ourselves on every occasion, with a restless and meddling activity, in the concerns of the nations which surround us.”
—George Canning (1770–1827)