The Geology of a Glasgow Allotment
Von Engeln, O.D., 1914. Effects of continental glaciation on agriculture. Part I. Bulletin of the American Geographical Society , 46 (4), pp.241-264. Von Engeln, O.D., 1914. Effects of Continental Glaciation on Agriculture. Part II. Bulletin of the American Geographical Society , 46 (5), pp.336-355.
