TY - BOOK AU - Khan,Majid Ali TI - The Fourth Caliph The Pious Caliphs of Islam AV - BP166.23 .K43 n.d. PY - 0000///n.d CY - Safat, Kuwait PB - Islamic Book Publishers KW - Caliphs KW - Biography KW - Islamic Empire KW - History KW - 622-661 N1 - Includes bibliographical references (p. 248-250) ER -