TY  - BOOK
AU  - Simmons, George F
AU  - Robertson, John S
TI  - Differential equations with applications and historical notes
SN  - 9780070530713
U1  - 515.35 
PY  - 1972///-R2010
CY  - New Delhi
PB  - Tata McGraw Hill
N1  - includes answers and index
ER  -