TY - RPRT TI - Ulcer disease in brook trout (Salvelinus fontinalis): Its economic importance, diagnosis, treatment, and prevention AU - S. F. Snieszko PY - 1952 DO - 10.1577/1548-8640(1952)14[43:udibts]2.0.co;2 UR - https://pubs.usgs.gov/publication/1014104 ID - 1014104 ER -