Once again the present volume contains the majority of the papers presented at the Third Pan-American Biodeterioration Society Meeting held at The George Washington University, Washington, D.C., USA, on August 3, 4, 5, and 6, 1989. The sponsors for this symposium included The George Washington University, The Smithsonian Institution, The Virginia Department of Health, The University of Connecticut, The National Institute for Occupational Safety and Health, Clark Atlanta University, Ball State University, the U.S. Naval Research Laboratory, the Agriculture Research Service/U. S. Department of...