Summary

独逸に於ける長距離電話ケーブル網と電話中継器装置の一般に就て

八木三四八 

Vol.14 No.12 pp.1171-1209

Publication Date:1930/12/01

Online ISSN:2188-2355

Print ISSN:0913-5693

Type of Manuscript:Speech

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Online ISSN:2188-2355