Methods of testing soils for engineering purposes, Method 3.2.1: Soil classification tests - Determination of the plastic limit of a soil - Standard method
Microbiology of food and animal feeding stuffs - Horizontal method for detection and enumeration of Campylobacter spp. - Part 2: Colony-count technique
Microbiology of food and animal feeding stuffs - Horizontal method for detection and enumeration of Campylobacter spp. - Part 3: Semi-quantitative method