edited by Anthony D. Milner and Richard J. Martin. edited by John P. Delaney, Richard L. Varco. edited by Bruce H. Thiers, Richard L. Dobson. edited by Phyllis Brown, Richard A. Hartwick. edited by Kumpati S. Narendra, Richard V. Monopoli. edited by Avroy A. Fanaroff, Richard J. Martin ; associate editor, Irwin R. Merkatz. edited by James D. Palmer, Richard Saeks. edited by George J. Dvorak and Richard T. Shield. edited by Jerry F. Franklin, L. J. Dempster, Richard H. Waring. edited by Harry Mussell, Richard C. Staples.