000 00305nam a2200145Ia 4500
020 _a0000000000
082 _b406
_a510
100 _a"PTB"
245 0 _aMath PTB 8
260 _bPTB
_aPakistan
_c2005
300 _a232
944 _cTR
999 _c218732
_d218732