000 00301nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c700
040 _aET
100 _aR.K SHARMA
245 0 _aTEACHING LEARNING
260 _bABD PUB.
_aDELHI
300 _a286
500 _a12392
942 _cBK
999 _c18712
_d18712