Trivedi, S.D. creator New Delhi Dominant Pub. 2003 170 p.: Ordinary Simultaneous Differential Equations (Page-303), Total Differential Equations (Page-357), Integration In Series (Page-422), Partial Differential Equations Of The First Order (Page-493), Partial Differential Equations With Constant Coefficients (Page-564). S. D. Trivedi Differential equations 515.625,TRI 8178881365 20221121175758.0