000 00313nam a2200145Ia 4500
700 _aReddy, R.S.
100 _aRao, V. K.
020 _a81-7169-235-4
365 _b325
942 _cBK
654 _a
245 _aLearning and teaching
260 _aNew Delhi
_bCommonwealth Publishers
_c1992
082 _a370
999 _c397915
_d397915
041 _aeng