Ripley, J. A., Jr The elements and structure of the physical sciences / by J. A. Ripley - New York : John Wiley, c1964 - xx, 584 p. : ill. ; 23 cm. Includes index ISBN: Rs. 8.95 Subjects--Topical Terms: PhysicsConservation lawsFluids and heatRelativity Dewey Class. No.: 530