National Industrial Conference Board. (1927). The cost of living in foreign countries.
Dyfyniad Arddull ChicagoNational Industrial Conference Board. The Cost of Living in Foreign Countries. New York, 1927.
Dyfyniad MLANational Industrial Conference Board. The Cost of Living in Foreign Countries. 1927.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.