Unified system of design documentation. Graphic symbols for use in electric schemes, systems of information transmission with temporal division of channels
Microbiology of food and animal feeding stuffs. Horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli. Part 2. Colony-count technique at 44 °C using 5-bromo-4-chloro-3-indolyl β-D-glucuronide