TY  - BOOK
AU  - Ledder,Glenn
TI  - Differential equations: a modeling approach 
SN  - 0072422297
AV  - QA371  .L32 2005
PY  - 2005///
CY  - Boston, MA
PB  - McGraw-Hill
KW  - Differential equations
KW  - Mathematical models
ER  -