References
- Everett, K. R. 1971: Composition and genesis of the organic soils of Amchitka Island, Aleutian Islands, Alaska. Arc. Alp. Res., 3: 1–16.
- Soil Survey Staff 1968: Supplement to soil classification system, 7th Approximation, Histosols. U.S. Dept. Agr., Soil Conservation Service, 1–22.
References
- Day, John H. 1972: Classification of organic soils (letter). Arc. Alp. Res., 4(3): 283.