1927 C. F. Marbut tr. K. D. Glinka 7 The study of the soil geography of North America has..enforced the recognition of the close relationship between the soil and climatic conditions.
1972 J. G. Cruickshank i. 30 Pedology is, by this definition, very close to soil geography except that the latter is concerned with all kinds of distributions involving soil, from those of natural genesis to limitations for soil cultivation.