Scientists have discovered they could be toxic and unsafe to handle.
https://metro.co.uk/2024/08/18/warning-issued-harmful-chemicals-found-books-21445708/?utm_source=dlvr.it&utm_medium=blogger
https://metro.co.uk/2024/08/18/warning-issued-harmful-chemicals-found-books-21445708/?utm_source=dlvr.it&utm_medium=blogger