Aitken, Robert Grant, 1864- **E5147.103R The binary stars. 2d edition. New York. McGraw-Hill Book Co., Inc. 1935. xii, 309 pp. Tllus. Portraits. Plate. Diagrams. Tables. [McGraw-Hill Astro- nomical series.] 23 cm. References throughout.
\ This card was printed at the Boston aS
Public Library, July 24, 1935. D8466 — Stars. Double.