Moulton, Forest Ray, 1872-1952. An introduction to celestial mechanics / Forest Ray Moulton. - 2d rev. ed. - New York ; The Macmillan company; 1914[printed 1956]. - xvi, 437 p. diagrs. 21 cm. The second revised edition was first published April, 1914. Bibliography at end of each chapter. Subjects--Topical Terms: Celestial mechanics. Dewey Class. No.: 521 / MOI 1956