Paul R. Ehrlich ... [et al.] ; foreword by Lewis Thomas. James G. Blight ... [et al.] ; foreword by Bruce Riedel. Archie R. Crouch ... [et al.] ; foreword by John King Fairbank. Mikhail A. Fedonkin ... [et al.] ; foreword by Arthur C. Clarke. Judith L. Irvin ... [et al.] ; foreword by Andre虂s Henri虂quez. by A. H. Francke ; edited with foreword by F. W. Thomas. edited by J. McK. Watts ... [et al.] ; foreword by David Tonkin.