Results of Observation with the Zenith Telescope of the Sayre Observatory from January 19, 1894, to August 19, 1895
Published in Transactions of the American Philosophical Society, in 1901, in volume 20, issue 2, pages 76-153
Date published:1901
Published in Transactions of the American Philosophical Society, in 1901, in volume 20, issue 2, pages 76-153
Date published:1901