Não informado. Thermotrol technician. J. F. Jelenko, Technology Division.
Lua i Stíl Chicago (17ú heag.)Não informado. Thermotrol Technician. New York: J. F. Jelenko, Technology Division.
Lua MLA (8ú heag.)Não informado. Thermotrol Technician. J. F. Jelenko, Technology Division.
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