Nadwi, Abdullah Abbas (1968) A study of the Arabic dialects of the Belad Ghamid and Zahran region of Saudi Arabia on the basis of original field recording and an examination of the relationship to the neighbouring regions. PhD thesis, University of Leeds.
Black, David.H (1968) Design and performance of Weft-Knitting Machinery. PhD thesis, University of Leeds.
Lind, Larry Frederick (1968) Synthesis of branch-guide directional couplers and filter prototypes. PhD thesis, University of Leeds.