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The Princeton encyclopedia of Islamic political thought / editor, Gerhard Bowering ; associate editors, Patricia Crone ... [et al.] ; assistant editor, Mahan Mirza.
Princeton, N.J. : Princeton University Press, c2013.
xliv, 656 p. : ill., maps ; 26 cm.
"In 2012, the year 1433 of the Muslim calendar, the Islamic population throughout the world was estimated at approximately a billion and a half, representing about one-fifth of humanity. In geographical terms, Islam occupies the center of the world, stretching like a big belt across the globe from east to west."--Page vii.