UNE-EN ISO 23611-1:2018 Soil quality - Sampling of soil invertebrates - Part 1: Hand-sorting and extraction of earthworms (ISO 23611-1:2018) (Endorsed by Asociación Española de Normalización in August of 2018.)
2018UNE-EN ISO 23611-1:2018 Soil quality - Sampling of soil invertebrates - Part 1: Hand-sorting and extraction of earthworms (ISO 23611-1:2018) (Endorsed by Asociación Española de Normalización in August of 2018.)
2011UNE-EN ISO 23611-1:2011 Soil quality - Sampling of soil invertebrates - Part 1: Hand-sorting and formalin extraction of earthworms (ISO 23611-1:2006)