TY - RPRT TI - Simplified method for producing permanent ruminal fistulae. AU - H A Thyfault AU - E C Leffel AU - M D Huang PY - 1975 DO - 10.3168/jds.s0022-0302(75)84805-3 UR - https://pubmed.ncbi.nlm.nih.gov/1206141/ ID - 1206141 ER -