00415nam a22001697a 4500003001200000005001700012008004100029020000600070040001200076082001500088100001300103245003500116250000600151260003900157300002200196650002700218NUST - PNEC20170116180758.0150409b        xxu||||| |||| 00| 0 eng d  a-  cLIBRARY  a909.09 AZI  aAziz, A.  aAbu Bakr : the caliphcA. Aziz  a-  aKarachibGhazanfar Academycc1978.  a 266 p. :c24 cm.  aIslam, CaliphxGeneral