United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry. (1947). Journal. [United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada.
Dyfyniad Arddull ChicagoUnited Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry. Journal. Washington, D.C.: [United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, 1947.
Dyfyniad MLAUnited Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry. Journal. [United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, 1947.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.