TY  - BOOK
AU  - Goursat,Edouard
AU  - Hedrick,E.R.
AU  - Dunkel,Otto
TI  - Differential equations
U1  - 517 
PY  - 1959///
CY  - New York
PB  - Dover
KW  - Calculus
KW  - Differential equations
N1  - Includes index
ER  -