000 00285nam a2200121Ia 4500
100 _aRao, V K & Reddy, R S
020 _a81-7169-236-2
942 _cBK
245 _aEducation and development
260 _aCommonwealth, New delhi
_c1992
082 _a372.2 Rao/Red
300 _avi; 260
999 _c63509
_d63509