http://dewey.info/scheme/a14/ en
621.38 Electronics, communications engineering
621.381 Electronics
621.381092 Electronic engineers 621.3815 Components and circuits
http://dewey.info/scheme/a14/ vi
621.38 Điện tử, kỹ thuật truyền thông
621.381 Điện tử học
621.381092 Kỹ sư điện tử 621.3815 Thành phần và mạch điện
http://dewey.info/scheme/a14/ it
621.38 Ingegneria elettronica, delle comunicazioni
621.381 Elettronica
621.381092 Ingegneri elettronici 621.3815 Componenti e circuiti
http://dewey.info/scheme/edition/e23/ en
621.38 Electronics, communications engineering
621.381 Electronics
621.38104 Special topics of electronics 621.381092 Electronic engineers 621.3813 Microwave electronics 621.3815 Components and circuits
http://dewey.info/scheme/edition/e22/ de
621.38 Elektronik, Kommunikationstechnik
621.381 Elektronik
621.38104 Spezielle Themen der Elektronik 621.381092 Elektronikingenieure 621.3813 Mikrowellenelektronik 621.3815 Bauelemente und Schaltungen
Dewey Decimal Classification
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