DIN EN 17233:2021-11 Water quality - Guidance for assessing the efficiency and related metrics of fish passage solutions using telemetry; German version EN 17233:2021
2021DIN EN 17233:2021 Water quality - Guidance for assessing the efficiency and related metrics of fish passage solutions using telemetry; German version EN 17233:2021
2018DIN EN 17233:2018 Water quality - Guidance for assessing the efficiency and related metrics of fish passage solutions using telemetry; German and English version prEN 17233:2018