Water quality - Guidance standard for the identification, enumeration and interpretation of benthic diatom samples from running waters; German version EN 14407:2004— 19 стр.
Water quality - Guidance standard on the enumeration of phytoplankton using inverted microscopy (Utermцhl technique); German version EN 15204:2006— 60 стр.
Water quality - Guidance standard for the surveying, sampling and laboratory analysis of phytobenthos in shallow running water; German version EN 15708:2009— 25 стр.
