editors, H. Latal and H. Mitter. editors, K. Semm, L. Mettler. editors, H. Lilholt, R. Talreja. editors, A. Zlatkis, R. E. Kaiser. editors, H. Walther and K. W. Rothe. editors, C. Jaffiol and G. Milhaud. editors, Hj. Muller, W. Weber. edited by W. Oettli and K. Ritter. editors, K.-L. Kompa and H. Walther. editor, William H. Beyer.