Rao, Digumarti Bhaskara. Assessing learning achievement / edited by Digumarti Bhaskara Rao; Ms.Digumarti Harshitha. - New Delhi : Discovery Publishing House , 2001 - xviii, 107p : ISBN: 81-7141-601-2 Subjects--Topical Terms: Education-teaching and learning Dewey Class. No.: T:5 / P1;1