BS EN 16859:2017 Water quality. Guidance standard on monitoring freshwater pearl mussel (Margaritifera margaritifera) populations and their environment
EN ISO 14688-1:2002 Geotechnical investigation and testing - Identification and classification of soil - Part 1: Identification and description ISO 14688-1: 2002
ISO 14688-1:2002 Geotechnical engineering - Identification and classification of soil - Part 1: Identification and description
BS EN 16859:2017 history
2017BS EN 16859:2017 Water quality. Guidance standard on monitoring freshwater pearl mussel (Margaritifera margaritifera) populations and their environment