000			00318nam a22001457a 4500
003			OSt
020			_a9788120350434
082			_a517.383 _bERS
100			_aBISWAL PURNA C
245			_aPARTIAL DIFFERENTIAL EQUATIONS
260			_aDELHI _bPHI _c2015
300			_a255
650			_aMATHEMATICS
942			_2ddc _cB
999			_c86038 _d86038