TY - RPRT TI - Methacholine: a 7-day inhalation toxicity study with primates. AU - R Binns AU - G C Clark AU - C J Hardy PY - 1975 DO - 10.1016/0300-483x(75)90027-x UR - https://pubmed.ncbi.nlm.nih.gov/1129803/ ID - 1129803 ER -