TY  - BOOK
AU  - Piaggio, H. T. H.
TI  - An elementary treatise on differential equations: : and their applications
U1  - 515.35 
PY  - 1966///
CY  - New York
PB  - ; Orient Longmans
KW  - Differential Equations
KW  - Mathematical Analysis
KW  - Mathematics
ER  -