edited by Michael C. Barth, James G. Titus ; foreword by William D. Ruckelshaus. edited by Michael R. Buchmeiser ; foreword by Rolf M鑥lhaupt. edited by David E. Busch, Joel C. Trexler ; foreword by Lance H. Gunderson. edited by Rita G. Lerner, George L. Trigg ; foreword by Walter Sullivan.