TY - BOOK AU - Khan,Majid Ali TI - The Second Caliph The Pious Caliphs of Islam AV - BP166.23 .K43 PY - 0000///n.d CY - Safat, Kuwait PB - Islamic Book Publishers KW - Caliphs KW - Biography KW - Islamic Empire KW - History KW - 622-661 ER -