TY  - BOOK
AU  - Piaggio,H.T.H.
TI  - An Elementary Treatise On Differential Equations And Their Applications
U1  - 517.2 19
PY  - 1949///
CY  - London
PB  - G. Bell & Sons, Ltd.
KW  - Differential equations
N1  - Includes bibographical references and indexs
ER  -