TY  - BOOK
AU  - H T H Piaggio
TI  - An elementary treatise on differential equations and their applications
T2  - Bell's mathematical series., Advanced section
SN  - 0713508515
U1  - 510.7 P579e 
PY  - 1928///
CY  - London
PB  -  G. Bell
KW  -  Differential equations
ER  -