TY  - BOOK
AU  - Piaggio,H.T.H.
TI  - An elementary treatise on differential equations and their applications
T2  - Bell's mathematical series
U1  - 515.35 23
PY  - 1920/// [impression 1973]
CY  - Bombay
PB  - Orient longman
KW  - Differential equations
N1  - Includes index
ER  -