TY  - BOOK
AU  - Lefschetz,Solomon
TI  - Lectures on differential equations
T2  - Annals of mathematics studies
U1  - 515.35 23
PY  - 1946/// [1965]
CY  - Princeton, London
PB  - Princeton university press, H. Milford, Oxford university press
KW  - Differential equations
ER  -