Title: A comparison of the photometric fields of the 6-inch doublet, 24-inch reflector, and 40-inch refractor of the Yerkes observatory, with some investigation of the astrometric field of the reflector /
Authors: Farnsworth, Alice H. 1893-1960.; Yerkes Observatory.
Publisher: The University of Chicago press ;
Year: 1926
Subjects: Yerkes Observatory.; Astronomical photometry.