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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Economics and Social Science, 1961.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (leaves [265]-269).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Michael Gurevitch.</dim:field>
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   <dim:field mdschema="dc" element="title" lang="en_US">The social structure of acquaintanceship networks</dim:field>
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   	&lt;Title>The social structure of acquaintanceship networks&lt;/Title>
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