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The earth and sky; a primer of astronomy for young readers (1898)
Holden, Edward Singleton, 1846-1914 · New York, D. Appleton & Company · leaf 140
The fifteen-inch telescope of the Harvard College Observatory.(Its glass is fifteen inches across.) 112 THE EARTH AND SKY. … OBSERVATORIES. 113Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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