TY  - BOOK
AU  - Iriyagama, Thissa
TI  - උද්ධමනය
SN  - 9789559519072
U1  - 338.521 
PY  - 1998///
CY  - Colombo
PB  - National Education Foundation
KW  - Production Economics
N1  - Text in Sinhala
ER  -