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   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Morris Halle.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Bao, Zhiming</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Dept. of Linguistics and Philosophy.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department">Massachusetts Institute of Technology. Department of Linguistics and Philosophy</dim:field>
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   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">1990</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1990.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (leaves 327-337).</dim:field>
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   <dim:field mdschema="dc" element="title" lang="en_US">On the nature of tone</dim:field>
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