00318nam a2200121Ia 4500082001900000100001900019245002600038260005600064300001900120490004700139500000500186700000500191  a530.1bP771.CM  aPollard, Harry  aCelestial mechanicsb  aNew YorkbMathematical Association of Americac1976  ax, 134p. Index  aThe Carus Mathematical monographsv no. 18  a  a