Densen hyoujun kitei sankou shiryou

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Densen hyoujun kitei sankou shiryou

License: Public Domain Mark

People: 日本電気工芸委員会電線標準調査委員会,金属工業統制会電線技術委員会
Time: 1943
Owner Organization: NDL Digital Collections

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Uploaded: 2020-12-17