TY  - BOOK
AU  - Simmons, George F.
AU  - Robertson, John S.
TI  - Differential equations with applications and historical notes
SN  - 0070530718
U1  - 515.35 
PY  - 1991///
CY  - New Delhi
PB  - Tata Mcgraw-hill publishing company 
KW  - Differential equations
KW  - historical notes
ER  -