Emil Raymond Riegel. (1949). Industrial chemistry: An elementary treatise for the student and general reader. New York: Reinhold.
Trích dẫn kiểu ChicagoEmil Raymond Riegel. Industrial Chemistry: An Elementary Treatise for the Student and General Reader. New York: Reinhold, 1949.
Deismireacht MLAEmil Raymond Riegel. Industrial Chemistry: An Elementary Treatise for the Student and General Reader. New York: Reinhold, 1949.
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