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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1981.</dim:field>
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   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Paul Hsiao-tseng Liang.</dim:field>
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   <dim:field mdschema="dc" element="subject" lang="en_US">Chemistry.</dim:field>
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