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Granson (Gransosten, Granso, Gränsö), Ostergotlands Lan, Sweden
latitude: 58.516701     
longitude: 16.9167     
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 
| Macrostomum balticum | prior to 1960 | intertidal | fine sand |