Citace podle APA

National productivity council. (1965). Refractories industry in USA, Britain and West Germany. National productivity council.

Styl Chicago

National productivity council. Refractories Industry in USA, Britain and West Germany. New Delhi: National productivity council, 1965.

Citace podle MLA

National productivity council. Refractories Industry in USA, Britain and West Germany. National productivity council, 1965.

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