GUSHEE, D. E. (1949). INDUSTRIAL AND ENGINEERING CHEMISTRY. AMERICAN CHEMICAL SOCIETY.
Lua i Stíl Chicago (17ú heag.)GUSHEE, D E. INDUSTRIAL AND ENGINEERING CHEMISTRY. WASHINGTON: AMERICAN CHEMICAL SOCIETY, 1949.
Lua MLA (9ú heag.)GUSHEE, D E. INDUSTRIAL AND ENGINEERING CHEMISTRY. AMERICAN CHEMICAL SOCIETY, 1949.
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