000 00314nam a2200145Ia 4500
008 220421s9999||||xx |||||||||||||| ||und||
020 _c150
040 _aET
100 _aOJHA R K
245 0 _aOUDYOGIK MANOVIGYAN
260 _bAGARWAL BOOK DEPO
_aNEW DELHI
300 _a496
500 _a66284
942 _cBK
999 _c72247
_d72247