http://dewey.info/scheme/a14/ en
500 Natural sciences and mathematics
500.2 Physical sciences
http://dewey.info/scheme/a14/ vi
500 Khoa học tự nhiên và toán học
500.2 Khoa học vật lý nghĩa rộng
http://dewey.info/scheme/a14/ it
500 Scienze naturali e matematica
500.2 Scienze fisiche
http://dewey.info/scheme/edition/e23/ en
500 Natural sciences and mathematics
500.2 Physical sciences
http://dewey.info/scheme/edition/e22/ de
500 Naturwissenschaften und Mathematik
500.2 Physikalische Wissenschaften
500.201185 Physikalische Wissenschaften—dynamische Systeme
Dewey Decimal Classification
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