TY  - GEN
AU  - Ayres , Frank
AU  - Ault , J.C. 
TI  - Schaum's outline of theory and problems of differential equations in si metric units
SN  - 0070990069
U1  - 512.9432 
PY  - 1972///
CY  - Singpore
PB  - McGraw Hill
KW  - Mathematics
ER  -