1. Alway, F. J. Agricultural value and reclamation of Minnesota peat soils. Bull. 188. Univ. Minn. Agr. Exp. Sta. 1920.
2. —, andNygard, I. J. Differentiation between lime-deficiency and acidity in the case of peat soils. Proc. First Int. Cong. Soil Sci.2: 1–24. 1927.
3. Anrep, A. Investigations of the peat bogs and peat industry in Canada. Can. Dept. Mines Br. Publ. 351: 1–185. 1915.
4. App. to Sum. Rept. 1926;V. Auer,1926
5. Auer, V. Stratigraphic and morphological investigations of peat bogs in southeastern Canada. Com. Inst. Quaestonum Foresta, Finlandiae, Editae 12. 1927.