The reign of al-Mutawakkil / M. Shamsuddin Miah. Miah, M. Shamsuddin. Mutawakkil, caliph, 821-861. 297.09 MIR Thesis--University of London. Bibliography: p. [331]-360. Dacca : Asiatic Society of Pakistan, 1969. 1969. 1969 Text xv, 381 p. ; eng Iraq History 634-1534.