TY  - BOOK
AU  - Markley Nelson G
TI  - Principles of differential equations
T2  - Pure and applied mathematics
SN  - 0471649562 (hbd)
U1  - B33, P4   TB 
PY  - 2002///
CY  - Hoboken John Wiley & Sons, Inc.
KW  -  Differential equations
KW  - Mathematics
N1  - Bibliography 334-336p
ER  -