Microbiology of food and animal feeding stuffs - Horizontal method for enumeration of Clostridium perfringens - Colony-count technique (ISO 7937:1997, modified); German version EN 13401:1999— 12 стр.
Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations (ISO 7218:2007); German version EN ISO 7218:2007— 77 стр.
Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of Clostridium perfringens - Colony-count technique (ISO 7937:2004); German version EN ISO 7937:2004— 24 стр.
Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of Clostridium perfringens - Colony-count technique (ISO 7937:2004); German version EN ISO 7937:2004— 24 стр.