TY - RPRT TI - Cost effectiveness of extending and implementing a mastitis control program. AU - S L Hill AU - T J Nicholls AU - M G Barton AU - D J Overend PY - 1990 DO - 10.1111/j.1751-0813.1990.tb03079.x UR - https://pubmed.ncbi.nlm.nih.gov/2127526/ ID - 2127526 ER -