edited by R. Baran and R.P.R. Dawber. edited by P. Morgan and B.H. Baker. edited by H. Martin and F.W. Eder. edited by G. Turian and H.R. Hohl. edited by G.G. Birch and K.J. Parker. edited by J. Rhodes and A.C. Walker. edited by C.H. Bamford and C.F.H. Tipper. edited by L. Rybach and L. J. P. Muffler. edited by T. Galliard and E.I. Mercer. edited by C. R. Brundle and A. D. Baker.