By Helena Dodziuk
By D R Karsa (TensioMetrics Limited, UK), R A Stephenson
By James N. Butler (Harvard University, cambridge, Massachusetts)
By J B Pedley
By Edith Mathiowitz (Brown University, Providence, Rhode Island)
By Ian M. Campbell
By T. L. Gilchrist, R. C. Storr
By H. R. Maurer
By Bell, Ronald Percy, Sharp, David William Arthur
By J. Kincheloe, S. Steinberg
By M. Gardner, U. Kelly
By E. O'Sullivan
By E. O'Sullivan, A. Morrell, M. O'Connor
By L. Weiner, M. Compton
By Rhobert Lewis, Wynne Evans
By A. Knupfer, C. Woyshner
By A. Ginsberg, M. Gasman
By R. Beirne
By Dan McGowan, Emma Poole
By Peter G. Jones, J.M. Sutton
By George G. Harrigan, Royston Goodacre
By R. Williamson
By Shelley Emling
By F.W. Karasek, R.E. Clement (University of Waterloo, Waterloo, Ontario, Canada)
By R K Dart (Loughborough University of Technology, UK)
By Alfred Burger
By Milton Orchin, etc.