Ramaswamy, G. S., 1923- SI Units: a source book by G. S. Ramaswamy & V.V. L. Rao. - Bombay: Tata McGraw-Hill 1971. - 109 p. ; 25 cm. Bibliography: p. 109. Subjects--Topical Terms: Metric system--Problems, exercises, etc.Physics--Problems, exercises, etc..