Delhi, F. A. N. (1973). Processes for direct production of high concentration phospheric acid and their prospects: Proceedings no.tech/15, by B.B. Roy and A.K. Roy. F.A.I.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিDelhi, Fertiliser Association. New. Processes for Direct Production of High Concentration Phospheric Acid and Their Prospects: Proceedings No.tech/15, by B.B. Roy and A.K. Roy. F.A.I, 1973.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিDelhi, Fertiliser Association. New. Processes for Direct Production of High Concentration Phospheric Acid and Their Prospects: Proceedings No.tech/15, by B.B. Roy and A.K. Roy. F.A.I, 1973.
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