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Langweerderwielen (Langweerder Wielen) Lake, Netherlands (Holland)
latitude: 52.966667 52 58 00 N
longitude: 5.733333 005 44 00 E
Precision of location: Alexandria Digital Library (with NGA GNDB data)
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Dendrocoelum lacteum | Jun 7-12, 1971 | littoral | vegetation | South-east shore. Vegetation, Phragmites, a little Typha, little detritus. 11-30 individuals per hour. |
| Dugesia polychroa | Jun 7-12, 1971 | littoral | vegetation | South-east shore. Vegetation, Phragmites, a little Typha, little detritus. 11-30 individuals per hour. |
| Polycelis tenuis | Jun 7-12, 1971 | littoral | vegetation | South-east shore. Vegetation, Phragmites, a little Typha, little detritus. 1-10 individuals per hour. |
| Microstomum lineare | Jun 7-12, 1971 | littoral | vegetation | South-east shore. Vegetation, Phragmites, a little Typha, little detritus. 31-100 individuals per hour. |
| Plagiostomum lemani | Jun 7-12, 1971 | littoral | vegetation | South-east shore. Vegetation, Phragmites, a little Typha, little detritus. 31-100 individuals per hour. |