1. Division of Mathematics and Natural Sciences; Altoona College, Pennsylvania State University; 3000 Ivyside Park Altoona PA 16601
2. Department of Food Science; Cornell University; Stocking Hall, Room 412 Ithaca NY 14853
3. Department of Civil and Environmental Engineering; University of Houston; N107 Engineering Building 1 Houston TX 77204-4003
4. Center for Environmental Biotechnology, The University of Tennessee, 676 Dabney-Buehler Hall; 1416 Circle Drive Knoxville TN 37996-1605
5. Biosciences Division; Oak Ridge National Laboratory; Oak Ridge TN 37831-6038
6. Department of Biology; University of Puerto Rico at Humacao; Humacao PR 00791
7. Center for Microbial Ecology, 540 Plant and Soil Sciences Building, Michigan State University; East Lansing MI 48824-1325