TY  - BOOK
AU  - Pontriagin,L.S.
TI  - A course in ordinary differential equations
U1  - 517.38 
PY  - 1967///
CY  - Delhi
PB  - Hindustan Pub. Corp.
KW  - Differential equations
KW  - Differential equations, Linear
N1  - Includes index
ER  -