TY  - BOOK
AU  - Piaggio, H. T. H. 
TI  - Elementary treatise on differential equations and their applications
SN  - 8123909098
U1  - 515.35 P571e 
PY  - 1985///
CY  - New Delhi
PB  - CBS Publishers & Distributors
KW  - Differential equations
ER  -