TY  - GEN
AU  - Degamboda , Sunanda
AU  - Ravindran , Joseph Alisten 
AU  -  Weerasinghe , S. 
TI  - Elementary quantitative methods - 4 - 2: diploma in management level 4
SN  - 9552301831
U1  - 658.152 
PY  - 1991///
CY  - Nugegoda
PB  - Open University
KW  - Management
ER  -