edited by A. A. Fitch. edited by P. D. Ritchie. edited by O. R. Frisch. edited by C. H. Gooch. edited by G.G. Birch. edited by J. A. Kitching. edited by R. D. Ulrich. edited by Gary A. Ritchie. edited by L.L. Hench. edited by M.H. Gutcho.