TY  - BOOK
AU  - Simmons George F
TI  - Differential equations:with applications and historical notes
U1  - B33, L2;2 
PY  - 1972///
CY  - New Delhi    
PB  -  Tata McGraw-Hill Publishing Company Ltd.    
KW  - Differential equations
N1  - Index 457-465p
ER  -