Includes the text of 'Tarīq ut-tahqīq'.
A Persian Sufi poem : vocabulary and terminology : concordance, frequency word-list, statistical survey, Arabic loan-words and Sufi-religious terminology in 'Tarīq-ut-tahqīq' (A.H.744) by Bo Utas. ISBN 0700701168. Published by Curzon Press in 1978. Publication and catalogue information, links to buy online and reader comments.