Öborn, I. (1994). Morphology, chemistry, mineralogy and fertility of some acid sulfate soils in Sweden. Dept. of Soil Sciences, Swedish University of Agricultural Sciences.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিÖborn, Ingrid. Morphology, Chemistry, Mineralogy and Fertility of Some Acid Sulfate Soils in Sweden. Uppsala: Dept. of Soil Sciences, Swedish University of Agricultural Sciences, 1994.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিÖborn, Ingrid. Morphology, Chemistry, Mineralogy and Fertility of Some Acid Sulfate Soils in Sweden. Dept. of Soil Sciences, Swedish University of Agricultural Sciences, 1994.
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