Thesis supervisor: Gary E. Christensen. Includes bibliographic references (p. 110-113).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/613705210 |
| Date | January 2009 |
| Creators | Wei, Ying. Christensen, Gary Edward. |
| Publisher | [Iowa City, Iowa] : University of Iowa, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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