TY  - BOOK
AU  - Piaggio, H.T.H 
TI  - Elemenatary treatise on differential equations: and their ap 
SN  - 81-239-0909-8 
U1  - 515.353 PIA  
PY  - 2003///
CY  - CBS publishers and distributors 
PB  - New Delhi 
KW  - MATHEMATICS
ER  -