Here is a chance to own a very rare piece of history and a unique item that comes directly from the library of the chemical factory of the concentration camp Auschwitz III Monowitz, where IG Farbenindustrie had a big chemical factory, and where thousands of slave labourers (over 500.000) were used, mainly from Auschwitz KL. This book comes from that former library, which passed completely to the Dwory Factory, which was the company who run since 1945 a synthetic benzin factory in the same place till the 90s, when it closed down. They are all on chemistry, physics, geology, etc. All science based books. This is very difficult to find and a real been there item! This two books have stamps from Buna Werke, which belonged to Auschwitz III, and second one only from IG Farben. this is for a book, with the stamp of Auschwitz within the first pages.