AU - Nelson CL TI - ENvironmental bacteriology in the unidirectional (horizontal) operating room PT - JOUR DP - 1979 TA - Archives of Surgery pages = {778-782}, VI - 114 IP - 7 AID - 10.1001/archsurg.1979.01370310020004 [doi] 4100 - http://dx.doi.org/10.1001/archsurg.1979.01370310020004 SO - Archives of Surgery July 1, 1979 114(7):778