| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:303746 |
| Date | January 1991 |
| Creators | Wu, Xin |
| Publisher | University of Bristol |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/1983/4319e1df-db0b-4700-8445-f36583172433 |
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