Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:276501 |
Date | January 1990 |
Creators | Adam, Eltayeb Elhag Ahmed |
Publisher | University of York |
Source Sets | Ethos UK |
Detected Language | English |
Type | Electronic Thesis or Dissertation |
Source | http://etheses.whiterose.ac.uk/4245/ |
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