Affiliation: | 1. Department of Soil Science, Urmia University, Urmia, 57135-165, Iran 2. Department of Soil Science, Faculty of Water and Soil, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran 3. Department of Soil Science, Shahrekord University, Shahrekord, 88186-34141, Iran 4. Department of Chemistry and Biochemistry, Jackson State University, Jackson, MS, USA
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