000 00252nam a2200109Ia 4500
008 201201s9999 xx 000 0 und d
082 _a620.11
100 _aCHOUDHRI,N.
245 0 _aENGG. MATERIALS
260 _bCALCUTTA, BANI BOOK
_c1956
942 _cOB
999 _c16663
_d16663