TY  - BOOK
AU  - Langer, Rudolph E. .
TI  - A First Course in Ordinary Differential Equations
U1  - 517.2 
PY  - 1954///
CY  - New York
PB  - John Wiley & Sons
KW  - Differential Equations
KW  - G-Mathematics
N1  - Index
ER  -