http://dewey.info/scheme/edition/e23/ en
371.33 Teaching aids, equipment, materials
371.333 Audio materials and equipment
371.3331 Radio 371.3332 Sound recordings and their players
http://dewey.info/scheme/edition/e22/ de
371.33 Unterrichtsmittel, Ausstattung, Materialien
371.333 Audiomaterialien und Audioausstattung
371.3331 Hörfunk 371.3332 Tonaufzeichungen und deren Abspielgeräte
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.