This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Consommations approximatives de la Houille dans la Grande Bretagne de . en British coal produced for each year between and map found online at wordpress cartographia wordpress Charles Joseph Minard other versions PDold Uploaded with Charles Joseph Minard
Page 2023 Free-images.com. All images are Public Domain