TY  - GEN
AU  - Karunananda ,  A. S.
AU  - Madurapperuma , L.  
AU  - Ranasinghe , D.D.M.
TI  - Introduction to  information systems: csu 1179
U1  - 004 
CY  - Nugegoda
PB  - Open University
KW  - Computer Science
ER  -