A historical important science booklet by the famous Albert Einstein signed.

Questions about Theory of Relativity 
 
Printed 1917 in Germany.
 
The book is complete and on very good condition
 
German Language.
WITH COA certification incluiding of the autograph.
All items are guaranteed to be 100% authentic. 
 
Returns: 14 day money back guarantee if item is Unsatisfactory to Buyers standards.