Ray, M.. A Text Book on Statics: With Attraction and Potential / Textual Documents M.Ray, R.D.Manglik & G.C.Sharma. - 2nd ed. / - New Delhi : S. Chand & Company , 1980. - 228p. : ill ; 22cm . ISBN: PB Subjects--Index Terms: Statics G-Physics Dewey Class. No.: 531.12 / Ra 211 St