Solar cycles / by H.H. Clayton.
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| Main Author: | |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
Smithsonian Institution,
1947.
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| Series: | Smithsonian miscellaneous collections ;
v. 106, no. 22. Publication (Smithsonian Institution) ; 3870. |
| Subjects: |
| Item Description: | "Roebling Fund." "March 5, 1947." |
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| Physical Description: | 18 pages : illustrations ; 25 cm. |