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La Slack (Slack Riviere, La Slack Riviere), Nord Pas de Calais, France
latitude: 50.799999
longitude: 1.6
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
| Proxenetes simplex | May 1963 | Ambleteuse, ca. 10 km north of Boulogne-sur-Mer, in the estuary of the small river Slack. |