WILLIAMS, C. Climate soil and crop production in the humid tropics. Oxfor Univ.Press.
Chicago-viite (17. p.)WILLIAMS, C.N. Climate Soil and Crop Production in the Humid Tropics. Oxfor Univ.Press.
MLA-viite (8. p.)WILLIAMS, C.N. Climate Soil and Crop Production in the Humid Tropics. Oxfor Univ.Press.
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