Astronomy for Young Folks

Northern Portion of the Moon at Last Quarter
Taken with 100-inch Hooker Telescope of the Mt. Wilson Observatory (See Chapter XXI)
ASTRONOMY for YOUNG FOLKS
ISABEL MARTIN LEWIS, A. M. ( Connected with the Nautical Almanac Office of the U. S. Naval Observatory )
NEW YORK DUFFIELD AND COMPANY 1922
Copyright, 1921, by The Century Company Copyright, 1922, by Duffield and Company
Printed in U. S. A.

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