Announcement of changes in electrical and photometric units. Issued May 15, 1947.
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off,
1947.
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| Series: | Circular of the National Bureau of Standards ;
459. |
| Subjects: |
| Item Description: | At head of title: U.S. Dept. of Commerce. National Bureau of Standards. |
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| Physical Description: | ii, 7 pages ; 23 cm. |
| Bibliography: | "Selected references": page 7. |