000 00282nam a2200109Ia 4500
008 190914s9999||||xx |||||||||||||| ||und||
100 _aPPA,Research Centre
245 0 _aEstacode Civil Establishment code
260 _aIslamabad
_bTata McGraw Hill
_c2002
300 _a593
942 _cBK
999 _c9662
_d9662