TY  - BOOK
AU  - Polking, John 
AU  - Arnold, David
TI  - Differential equations: with boundary value problems ,
SN  - 131437399
AV  - QA371 .D4495 2006  
PY  - 2006///
CY  - New Jersey
PB  - Pearson Education
KW  - Equations
ER  -