TY  - BOOK
AU  - Leighton,Walter
TI  - An introduction to the theory of differential equations
T2  - International series in pure and applied mathematics
AV  - QA371 .L38
U1  - 517.38 
PY  - 1952///
CY  - New York
PB  - McGraw-Hill
KW  - Differential equations
KW  - Local
ER  -