SUNDHARAM, K P M. principle of economics / K. P. M. SUNDHARAM AND M. C. VAISH - 13TH EDITION - NEW DELHI : VISKAS PUBLISHING HOUSE PVT LTD, c1973. - xv,722p. : ill. ; 24cm. ISBN: 0706914120 Subjects--Topical Terms: economics Dewey Class. No.: 330 / SUN