Premachandran P N & Subramonia Iyer M(Guide). (1998). Land Evaluation and Suitability Rating of the Major Soils of Onattukara Region. Department of Soil Science and Agricultural Chemistry, College of Agriculture.
Trích dẫn kiểu ChicagoPremachandran P N và Subramonia Iyer M(Guide). Land Evaluation and Suitability Rating of the Major Soils of Onattukara Region. Vellayani: Department of Soil Science and Agricultural Chemistry, College of Agriculture, 1998.
Trích dẫn MLAPremachandran P N và Subramonia Iyer M(Guide). Land Evaluation and Suitability Rating of the Major Soils of Onattukara Region. Department of Soil Science and Agricultural Chemistry, College of Agriculture, 1998.
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