prepared under the auspices of the American Economic Association and the American Agricultural Economics Association by the Economics Institute, University of Colorado, Boulder ; edited by Wyn F. Owen and Fred R. Glahe
prepared under the auspices of the American Economic Association and the American Agricultural Economics Association ; edited by Wyn F. Owen and George H. Antoine
edited by Roch Choquette, John Wolforth, Marcien Villemure = L'enseignement de la géographie au Canada / sous la direction de Roch Choquette, John Wolforth, Marcien Villemure