Riegel, E. R. (1974). Riegel,s handbook of industrial chemistry (7thed.). Van Nostrand.
Tohutoru Kātū Chicago (17th ed.)Riegel, Emil Raymond. Riegel,s Handbook of Industrial Chemistry. 7thed. New York: Van Nostrand, 1974.
Tohutoro MLA (9th ed.)Riegel, Emil Raymond. Riegel,s Handbook of Industrial Chemistry. 7thed. Van Nostrand, 1974.
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