http://dewey.info/scheme/a14/ en
384 Communications    Telecommunication
384.6 Telephony
http://dewey.info/scheme/a14/ vi
384 Phương tiện truyền thông (liên lạc)   Viễn thông
384.6 Hệ thống điện thoại
http://dewey.info/scheme/a14/ it
384 Comunicazioni    Telecomunicazioni
384.6 Telefonia
http://dewey.info/scheme/edition/e23/ en
384 Communications
384.6 Telephony
384.6025 Directories of persons and organizations 384.63 Economic aspects of production 384.64 Activities and services 384.65 Facilities
http://dewey.info/scheme/edition/e22/ de
384 Kommunikation (Nachrichtenübermittlung)    Telekommunikation
384.6 Fernsprechtechnik
384.6025 Verzeichnisse von Personen und Organisationen 384.63 Wirtschaftliche Aspekte der Produktion 384.64 Teilbereiche und Dienste 384.65 Einrichtungen
Dewey Decimal Classification
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