Environmental Sampling for Spores of Bacillus anthracis. - Teshale, Eyasu H.; Painter, John; Burr, Gregory A.; Mead, Paul; Wright, Scott V.; Cseh, Larry F.; Zabrocki, Ronald; Collins, Rick; Kelley, Kathy A.; Hadler, James L.; Swerdlow, David L. (Emerging Infectious Diseases, 2002)