HIGHER CATEGORIES OF SOIL CLASSIFICATION - ORDER, SUBORDER, AND GREAT SOIL GROUPS

[1] BALDWIN M, 1938, USDA YB, P997

[2] ELLIS JH, 1938, SOILS MANITOBA EC SU

[3] Jenny H., 1941, FACTORS SOIL FORMATI, DOI DOI 10.1016/0016-7061(95)90014-4

[4] MARBUT CF, 1942, LIFE WORK CF MARBUT

[5] MITCHELL J, 1944, 12 SASK DOM DEP AGR

[6] ODYNSKY W, 1945, ALBERTA RES COUNCIL

[7] ROBERTS RC, 1942, SOIL SURVEY SER 1936, V8

[8] AN APPROACH TOWARD A RATIONAL CLASSIFICATION OF CLIMATE [J]. GEOGRAPHICAL REVIEW, 1948, 38 (01) : 55 - 94

[1] BALDWIN M, 1938, USDA YB, P997

[2] ELLIS JH, 1938, SOILS MANITOBA EC SU

[3] Jenny H., 1941, FACTORS SOIL FORMATI, DOI DOI 10.1016/0016-7061(95)90014-4

[4] MARBUT CF, 1942, LIFE WORK CF MARBUT

[5] MITCHELL J, 1944, 12 SASK DOM DEP AGR

[6] ODYNSKY W, 1945, ALBERTA RES COUNCIL

[7] ROBERTS RC, 1942, SOIL SURVEY SER 1936, V8

[8] AN APPROACH TOWARD A RATIONAL CLASSIFICATION OF CLIMATE [J]. GEOGRAPHICAL REVIEW, 1948, 38 (01) : 55 - 94