Singh, Surjit . Comparative study of the concept of human nature : propounded by educational theorists and revealed by psychological studies / by Surjit Singh. - Jaipur : ABD Publishers , 1986. - v, 536p. : ill.,fig. ; 22cm. . Includes index ISBN: Rs. 325.00 (Hb) Subjects--Index Terms: PSYCHOLOGY Dewey Class. No.: 150.198 / SIN/C