TY  - BOOK
AU  - Simmons George F
AU  - John S Robertson
TI  - Differencial equations with applications and historical notes
SN  - 9780070530713
AV  - QA372S5 1991 
PY  - 1991///
CY  - New delhi
PB  - Tata mcgraw hill education
N1  - Index
ER  -