The plan of St. Gall / 2 The Plan of St. Gall : a studiy of the architecture & economy or, & life in paradigmatic carolingian monastery / by Walter Horn and Ernest Borb with a foreword by Wolfgang Braunfels, a translation into English by Charles W. Jones of the Directive of Adalhard, 753 - 826, the Ninth Abbot of Corbie, and with a note by A. Hunter Dupree on the Significance of the Plan of St. Gall to the history of measurement - Horn, Walter William (The plan of St. Gall a study of the architecture and economy of and life in a paradigmatic Carolingian monastery, 1979)