Baer, U. J. (1955). Letters to an American farmer. National Catholic Rural Life Conference.
Dyfyniad Arddull ChicagoBaer, Urban J. Letters to an American Farmer. Des Moines: National Catholic Rural Life Conference, 1955.
Dyfyniad MLABaer, Urban J. Letters to an American Farmer. National Catholic Rural Life Conference, 1955.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.