TY  - BOOK
AU  - Piaggio,H.T.H.
TI  - An elementary treatise on differential equations and their applications
T2  - Bell's mathematical series.  Advanced section
AV  - QA371 .P5 1928
PY  - 1928///
CY  - London
PB  - G. Bell
KW  - Differential equations
ER  -