A search for a planet beyond Neptune / by William H. Pickering
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| Superior document: | Annals of the astronomical observatory of Harvard College 61,2 |
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| VerfasserIn: | |
| Place / Publishing House: | Cambridge, Mass. : Observatory of Harvard College, 1909 |
| Year of Publication: | 1909 |
| Language: | English |
| Series: | Annals of the astronomical observatory of Harvard College
61,2 |
| Physical Description: | S. 113 - 162; Ill., graph. Darst. |
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