http://dewey.info/scheme/edition/e23/ en
621.31 Generation, modification, storage, transmission of electric power
621.312 Generation, modification, storage
621.3121 Generation 621.3124 Direct energy conversion 621.3126 Modification and storage
http://dewey.info/scheme/edition/e22/ de
621.31 Erzeugung, Modifikation, Speicherung, √úbertragung elektrischer Energie
621.312 Erzeugung, Modifikation, Speicherung
621.3121 Erzeugung 621.3124 Energiedirektumwandlung 621.3126 Modifikation und Speicherung
Dewey Decimal Classification
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License by OCLC Online Computer Library Center, Inc. Permissions beyond the scope of this license may be available at here. All copyright rights in the Dewey Decimal Classification system are owned by OCLC. Dewey, Dewey Decimal Classification, DDC, OCLC and WebDewey are registered trademarks of OCLC.