000 00433nam a2200157 4500
082 _a515.35 GOU-V
100 _aGoursat, Edouard
_e
245 _aVariation of solutions: Partial differential equations of the second order
_cEdouard Goursat
250 _a
260 _aDover Publcations, New York
_c1964
300 _a
490 _a
650 _aDifferential equations-- Analysis-- Mathematics
700 _a
_e
942 _cBK
999 _c442802
_d442802