000 00284nam a2200121Ia 4500
100 _aChalam, K S
020 _a81-210-0221-4
942 _cBK
245 _aEducation and weaker sections
260 _aInter-India Publications, New Delhi
_c1987
082 _a301.37 Cha
300 _a288p
999 _c31669
_d31669