BS EN 13401:1999 Microbiology of Food and Animal Feeding Stuffs - Horizontal Method for Enumeration of Clostridium Perfringens - Colony - Count Technique ISO 7937:1997 Modified
2004BS EN ISO 7937:2004 Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of Clostridium perfringens - Colony-count technique
1999BS EN 13401:1999 Microbiology of Food and Animal Feeding Stuffs - Horizontal Method for Enumeration of Clostridium Perfringens - Colony - Count Technique ISO 7937:1997 Modified