| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:575114 |
| Date | January 1975 |
| Creators | Walton, Michael Henry |
| Publisher | Heriot-Watt University |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/10399/2133 |
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