TY  - BOOK
AU  - Ayres, Frank
TI  - Schaum's outline of theory and problems of differential equations in SI metric units
T2  - Schaum's outline series
SN  - 0070999069
U1  - 515.35,D,ayr 
PY  - 1972///
CY  - Singapore
PB  - McGraw-Hill
ER  -