Moulton, Forest Ray An introduction to celestial mechanics Forest Ray Moulton and Nathaniel H. Frank - 2nd ed. - New York Macmillan 1914 - xvi, 437p. Donated by Mrs. Bappu Subjects--Topical Terms: Astronomy and astrophysics thesaurusCelestial mechanics Universal Decimal Class. No.: 521.1 / MOU