Ray, M. . The Textbook on Dynamics / Textual Documents M. Ray & G.C. Sharma. - 12th ed. / - New Delhi : S Chand & Co , 1997. - 322p. ; 21cm. ISBN: 81-219-0342-4 Subjects--Index Terms: Mathematics Dynamics PG-Mathematics Dewey Class. No.: 531.11 / Ra 211 Te