TY  - BOOK
AU  - Coddington,Earl A.
AU  - Levinson,Norman
TI  - Theory of ordinary differential equations
T2  - International series in pure and applied mathematics
AV  - QA372 C63
PY  - 1955///
CY  - New York
PB  - McGraw-Hill
KW  - Ecuaciones diferenciales
ER  -