TY  - BOOK
AU  - Berry,John
AU  - Porkess,Rogers
TI  - Differential equations
SN  - 9780340905272 (pbk.)
U1  - 515.35 
PY  - 2006///
CY  - London
PB  - Hodder Murray
KW  - Differential equations
KW  - Problems, exercises, etc
ER  -