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Gaya APA

Blair, G., Lefroy, R. (1989). Sulfur Fertilizer Policy for Lowland and Upland Rice Cropping System in Indonesia: Aciar Proceedings No.29 . Indonesia: ACIAR.

Gaya MLA

Blair, Graeme., Lefroy, Rod. "Sulfur Fertilizer Policy for Lowland and Upland Rice Cropping System in Indonesia: Aciar Proceedings No.29". Indonesia: ACIAR, 1989. Text.