TY - BOOK AU - Gill,Dan William TI - Response of upland crops to potassium at three levels of aluminium saturation in the humid tropics of West Sumatra PY - 1988/// CY - Ann Arbor, Mich. PB - University Microfilms International KW - Upland rice KW - Indonesia N1 - Thesis (Ph.D.) - North Carolina State University, 1988 ER -