Tradition and transition : extension education for the farm unit in a changing society : a study of all agricultural extension services in Alberta with new directions charted to 1980
A muck manual for farmers : a treatise on the physical and chemical properties of soils; the chemistry of manures; including also the subjects of composts, artificial manures and irrigation
A review and appraisal of agricultural production, structure and international agricultural trade in six countries of Eastern Europe : Yugoslavia, Bulgaria, Romania, Hungary, Czechoslovakia, and Poland