Não informado. (1978). Metalworking, Engineering and Marketing. News Digest.
Citace podle Chicago (17th ed.)Não informado. Metalworking, Engineering and Marketing. Nagoya, Japão: News Digest, 1978.
Citace podle MLA (8th ed.)Não informado. Metalworking, Engineering and Marketing. News Digest, 1978.
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