DIN EN ISO 8689-1-2000 水质.江河的生物分类.第1部分:对底栖微型无脊椎动物调查的生物质量数据的解释指南
Water quality - Biological classification of rivers - Part 1: Guidance on the interpretation of biological quality data from surveys of benthic macroinvertebrates (ISO 8689-1:2000); German version EN ISO 8689-1:2000