TY - RPRT TI - Prevalence of Microsporidia, Cryptosporidium spp., and Giardia spp. in beavers (Castor canadensis) in Massachusetts AU - R. Fayer AU - M. Santin AU - J.M. Trout AU - S. DeStefano AU - K. Koenen AU - T. Kaur PY - 2006 UR - https://pubs.usgs.gov/publication/70028807 ID - 70028807 ER -