TY  - BOOK
AU  - Petrovsky [i G], 
TI  - Lectures On Practical Differential Equations Tr From Russian By A S
U1  - 515.35 
PY  - 1962///
CY  - Kottayam
PB  - NATIONAL BOOKSTALL
KW  - General Stack
KW  - DIFFERENTIAL EQUATIONS
KW  - MATHEMATICS
KW  - Generalia
ER  -