I would like to buy a copy of Muhammad Rashid Rida, "Al-Khilafah."  It
is an Arabic publication, most recently printed in Cairo, Egypt.  I
have searched online and in local Arab bookstores, but nothing. 
Various spelling of the author's name include: Mohamed,
Muhammed...Rashid, Rachid...Rida and the title can be spelled:
al-Khilafa, the caliphate, al-hilafa, al-hilafa.  The information I am
looking for is if there is a place I can buy the book.  Thank you.