TY  - GEN
AU  - George F. Simmons, Steven G. Krantz
AU  - Port, Dan.
TI  - Differential equations: theory, techvique and practice
SN  - 0071254374
AV  - QA371 
U1  - 515/.35 
PY  - 2007///
CY  - Boston
PB  - Mc Graw Hill
KW  - Differential equations
N1  - Includes index
ER  -