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  1. 1
    by Muhammad, Ali Umar
    Published 2014
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    Thesis Book
  2. 2
  3. 3
    by Shehu, Maryam Maimota
    Published 2015
    Thesis Book
  4. 4
    by Ibrahim, Muhamad Sani
    Published 2017
    Thesis Book
  5. 5
    by Yusuf, Harun-Al-Rashid, 1946-
    Published 1977
    Thesis
  6. 6