The New Astronomy

Langley, S. P. (Samuel Pierpont) · 1906

DIRECTOR OF THE ALLEGHENY OBSERVATORY, MEMBER NATIONAL ACADEMY, FELLOW ROYAL ASTRONOMICAL SOCIETY, ETC., ETC. COPYRIGHT, 1884, 1885, 1886, AND 1887, BY THE CENTURY CO.; AND 1887, BY S. P. LANGLEY.…

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