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
System of standards on information, librarianship and publishing. Multilingual thesaurus for information retrieval. Composition, structure and basic requirements for development
Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses. Part 1. General rules and test methods
