Perera, H.D.B.S.
Trend analysis of the use of natural resources in the construction industry - Colombo Department of National Planning 2002 - vi, 54p. 24 cm
9559017098
Sri Lanka
Natural resources
SL 502.65 / PER
Trend analysis of the use of natural resources in the construction industry - Colombo Department of National Planning 2002 - vi, 54p. 24 cm
9559017098
Sri Lanka
Natural resources
SL 502.65 / PER