Constant, B. (1985). Process instruments and controls handbook (3a. ed.). McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)Constant, Benjamin. Process Instruments and Controls Handbook. 3a. ed. Nueva York: McGraw-Hill, 1985.
Tohutoro MLA (9th ed.)Constant, Benjamin. Process Instruments and Controls Handbook. 3a. ed. McGraw-Hill, 1985.
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