Dr Leonardo Antaris has just released the 2nd edition of his reference book covering Astra Firearms. This one covers all the Astra guns, Semi-auto, revolvers and shotguns.
It is not cheap but most of the pictures are in color (think gold Damascus engraving) and it has a lot of information not found in the first edition. For any fellow Astra collectors, it is a must buy. Mine is even autographed and dated!
Steve