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| Type: |
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| Publisher: | 2002. |
| Dissertation: | Thesis (Ph. D.)--Pennsylvania State University, 2002. |
| OCLC: | 55725950 |
| Web Resources: | etda.libraries.psu.edu |
| Citations: | Cite this Item Export to EndNote Export to RefWorks |
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*Distances, where provided, are approximate and based on postal-code geographic centers
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