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.
Prof Otto Bayer Polyurethan. en Prof Otto Bayer in demonstrating his creation from the polyurethane pt Prof Otto Bayer em demonstrando sua criao de poliuretano bayer nsf opendocument Bayer AG PDold deaths births Polyurethane foam
Page 2023 Free-images.com. All images are Public Domain