2011DIN EN ISO 5667-13:2011-08 Water quality - Sampling - Part 13: Guidance on sampling of sludges (ISO 5667-13:2011); German version EN ISO 5667-13:2011
2011DIN EN ISO 5667-13:2011 Water quality - Sampling - Part 13: Guidance on sampling of sludges (ISO 5667-13:2011); German version EN ISO 5667-13:2011