"Published under the auspices of the Agricultural Committee of the Greater Des Moines Chamber of Commerce with the cooperation of the Iowa State University Center for Agriculture and Economic Development."
Proceedings of the Thirteenth International Conference of Agricultural Economists, held at the University of Sydney, Sydney, New South Wales, Australia, 21-30 August 1967 : The economist and farm people in a rapidly changing world
Papers of a conference sponsored by the University of Manitoba Faculty of Agriculture and Home Economics and the Iowa State University Center for Agricultural and Economic Development