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.
Strajk kopPokoj HistoriaPolski str.. Strajk kopalni Pokj HISTORIA POLSKI Henryk Zieliski PD or CCBYSA ccbysajul anonymousEU Illustrations from Historia Polski Second Polish Republic Strikes by coal miners Strikes in Poland
Page 2023 Free-images.com. All images are Public Domain