TY - RPRT TI - Obstructing prostatic urethral calculi. AU - R K Vinson AU - S A Koff PY - 1976 DO - 10.1111/j.1464-410x.1976.tb06688.x UR - https://pubmed.ncbi.nlm.nih.gov/1009333/ ID - 1009333 ER -