Austin, D. (1979). Chemical engineering drawing symbols (1a ed.). John Wiley & Sons Limited.
Cita Chicago Style (17a ed.)Austin, D.G. Chemical Engineering Drawing Symbols. 1a ed. New York: John Wiley & Sons Limited, 1979.
Cita MLA (9a ed.)Austin, D.G. Chemical Engineering Drawing Symbols. 1a ed. John Wiley & Sons Limited, 1979.
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