00934nam a2200277 i 450099100088972970753620020507102826.0951124s1977 us ||| | eng b1014397x-39ule_instLE00638638ExLDip.to Fisicaita510.34515'.35QA371Lefschetz, Solomon12523Differential equations :geometric theory /S. LefschetzNew York :Dover Publications, Inc.,1977x, 390 p. :ill. ;21 cm.Differential equationsTopology.b1014397x21-09-0627-06-02991000889729707536LE006 510.34+510.39 LEF12006000021364le006-E0.00-l- 00000.i1017131927-06-02Differential equations82414UNISALENTOle00601-01-95ma -engus 01