Microbiology of food and animal feeding stuffs -- Guidelines on preparation and production of culture media -- Part 1: General guidelines on quality assurance for the preparation of culture media in the laboratory— 26 стр.
Microbiology of the food chain -- Preparation of test samples, initial suspension and decimal dilutions for microbiological examination -- Part 1: General rules for the preparation of the initial suspension and decimal dilutions— 34 стр.
