Philadelphia, University of Pennsylvania 1940 ix + 203pp. with one map & 2 plates out of text, 23cm., softcover, Doctoral Dissertation (A dissertation in oriental studies presented tot the Faculty of the Graduate School in partial fulfillment of the requirements for the degree of Doctor of Philosophy), stamp at verso of title page, text is clean and bright, [Introduction in English, Text edition in Arabic with English trnaslation], X109994