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Books By is the author of "Heliographic Positions of Sun-Spots Observed at Hamilton College from 1860 to 1870 (Classic Reprint)" and "Heliographic Positions of Sun-Spots Observed at Hamilton College From 1860-1870".
Books by Books By
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Heliographic Posi...
Peters, C. H. F.
Paperback:
$12.29
Heliographic Posi...
Peters, C. H. F.
Hardback:
$28.25
Heliographic Posi...
Peters, C. H. F.
Paperback:
$10.97