Heliographic positions of sun-spots : observed at Hamilton College from 1860-1870
by C.H.F. Peters ; edited for publication by Edwin B. Frost
Bok Engelsk 1907 Christian Heinrich Friedrich Peters
| Utgitt | Washington, D.C. : Carnegie Institution of Washington , 1907
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|---|---|
| Omfang | XIII, 189 s.
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| Emner |
