TY - RPRT TI - A modified complement fixation test for contagious pleuropneumonia. AU - C W Pearson AU - G McPherson PY - 1966 DO - 10.1111/j.1751-0813.1966.tb04730.x UR - https://pubmed.ncbi.nlm.nih.gov/6008189/ ID - 6008189 ER -