Engineering reports.
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| Corporate Authors: | , , |
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| 格式: | 序列 |
| 語言: | English |
| 出版: |
New York, :
Charles Francis Press.
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| 主題: |
| 出版: | v. 1- Apr. 1930- |
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| Item Description: | At head of title, vol. 1-2: Joint Subcommittee on Development and Research of the National Electric Light Association and the Bell Telephone System. |
| 實物描述: | v. |
| 參考書目: | Includes bibliographical references. |