Não informado. (1929). Heating, Piping and Air Conditioning. Penton Publishing.
Chicago-viite (17. p.)Não informado. Heating, Piping and Air Conditioning. Cleveland, Ohio: Penton Publishing, 1929.
MLA-viite (8. p.)Não informado. Heating, Piping and Air Conditioning. Penton Publishing, 1929.
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