edited by Erik Stalberg and Robert R. Young. edited by Roger Perry and Robert J. Young. edited by Bijan Safai and Robert A. Good. edited by James F. Young, Robert S. Shane. edited by Heinz Fraenkel-Conrat and Robert R. Wagner. edited by George P. Shultz and Robert C. Armstrong. edited by F.G.A. Stone & Robert West. edited by J. J. Twomey and Robert A. Good. edited by J.C. Ellory and J.D. Young. edited by Jeng M. Hsu and Robert L. Davis.