TY  - BOOK
AU  - Markley, Nelson G.
TI  - Principles of Differential Equations
T2  - Pure and Applied Mathematics(John Wiley & Sons.,
SN  - 0471649562
U1  - 515.35 
PY  - 2004///
CY  - New Jersey
PB  - Wiley-Interscience
ER  -