http://dewey.info/scheme/a14/ en
513 Arithmetic
513.5 Numeration systems
http://dewey.info/scheme/a14/ vi
513 Số học
513.5 Hệ thống đếm
http://dewey.info/scheme/a14/ it
513 Aritmetica
513.5 Sistemi di numerazione
http://dewey.info/scheme/edition/e23/ en
513 Arithmetic
513.5 Numeration systems
513.52 Binary system (Base 2 system) 513.55 Decimal system (Base 10 system)
http://dewey.info/scheme/edition/e22/ de
513 Arithmetik
513.5 Zahlensysteme
513.52 Binärsystem (System zur Basis 2) 513.55 Dezimalsystem (System zur Basis 10)
Dewey Decimal Classification
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