American Standards Association, & American Standards Association. (1961). Graphical symbols for process flow diagrams: In the petroleum and chemical industries. --. New York, New York: American Society of Mechanical Engineers.
Citación estilo ChicagoAmerican Standards Association, y American Standards Association. Graphical Symbols for Process Flow Diagrams: In the Petroleum and Chemical Industries. --. New York, New York: American Society of Mechanical Engineers, 1961.
Cita MLAAmerican Standards Association, y American Standards Association. Graphical Symbols for Process Flow Diagrams: In the Petroleum and Chemical Industries. --. New York, New York: American Society of Mechanical Engineers, 1961.
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