000 00300nam a2200121 4500
008 160616s 000 0
245 _aElementary partial differential equations
100 _aBerg, Paul W
100 _aMcgraegor, James L
500 _aB334 K44
942 _cBK
_2BK657
080 _a517.95 BER
999 _c657
_d657