edited by Rita G. Lerner, George L. Trigg ; foreword by Walter Sullivan. edited by Rita G. Lerner, George L. Trigg ; foreword by Conyers Herring. edited by Rita G. Lerner, George L. Trigg. edited by Michael C. Barth, James G. Titus ; foreword by William D. Ruckelshaus. edited by Agata Godula-Jopek ; with a foreword by Detlef Stolten. edited by James K. Boyce, Barry G. Shelley ; foreword by Melvin Oliver. edited by David E. Busch, Joel C. Trexler ; foreword by Lance H. Gunderson.