Não informado. (1967). Mcgraw-Hills air and water news. Air and Water News.
Chicago-viite (17. p.)Não informado. Mcgraw-Hills Air and Water News. New York: Air and Water News, 1967.
MLA-viite (8. p.)Não informado. Mcgraw-Hills Air and Water News. Air and Water News, 1967.
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