Sundharam, K. P. M. Principles of economics / by K.P.M. Sundharam & M.C. Vaish - 13th and rev. ed. - New Delhi : Vikas , 1962 - 650p. : ill. ; 22 cm. Includes bibliography. ISBN: 0706902858 Subjects--Topical Terms: Economics Dewey Class. No.: 330 / SUN