W. W. durgin,Symposium on Flow : Its Measurement adn Control in Science and Industry.Symposium on Flow : Its Measurement and Control in Science and Industry (2nd : 1981 : Missouri)：Flow : its measurement and control in science and industry．V.2.ISA,1981.
Symposium on Flow : Its Measurement and Control in Science and Industry (2nd : 1981 : Missouri)：Flow : its measurement and control in science and industry．V.2
W. W. durgin,Symposium on Flow : Its Measurement adn Control in Science and Industry.ISA,1981.
