Riegel, E. R. (1949). Industrial chemistry. An elementary treatise for the student and general reader (5th ed.). Reinhold Publishing.
Citace podle Chicago (17th ed.)Riegel, Emil Raymond. Industrial Chemistry. An Elementary Treatise for the Student and General Reader. 5th ed. New York: Reinhold Publishing, 1949.
Citace podle MLA (9th ed.)Riegel, Emil Raymond. Industrial Chemistry. An Elementary Treatise for the Student and General Reader. 5th ed. Reinhold Publishing, 1949.
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