http://dewey.info/scheme/edition/e23/ en
660.296 Thermochemistry--chemical engineering
660.2969 Thermodynamics--chemical engineering
http://dewey.info/scheme/edition/e22/ de
660.296 Thermochemie—chemische Verfahrenstechnik
660.2969 Thermodynamik—chemische Verfahrenstechnik
Dewey Decimal Classification
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