TY - RPRT TI - Effects of seeding procedures and water quality on recovery of Cryptosporidium oocysts from stream water by using U.S. Environmental Protection Agency method 1623 AU - D.S. Francy AU - O. D. Simmons AU - M.W. Ware AU - E.J. Granger AU - M.D. Sobsey AU - F. W. Schaefer PY - 2004 DO - 10.1128/aem.70.7.4118-4128.2004 UR - https://pubs.usgs.gov/publication/70026937 ID - 70026937 ER -