TY  - GEN
AU  - Ayres, Frank
TI  - Schaum's outline of theory and problems of differential equations in simetric units
T2  - schaum's outline series
U1  - 517.38 
PY  - 1981///, r1988
CY  - Singapore
PB  - McGraw - Hill
KW  - DIFFERENTIAL EQUATIONS
ER  -