Economic Commission for Europe. (1976). Long-term prospects and policies in the construction sector. New York: United Nations.
Dyfyniad Arddull ChicagoEconomic Commission for Europe. Long-term Prospects and Policies in the Construction Sector. New York: United Nations, 1976.
Dyfyniad MLAEconomic Commission for Europe. Long-term Prospects and Policies in the Construction Sector. New York: United Nations, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.