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   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Daniel J. Kleitman.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Altschul, Stephen Frank</dim:field>
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   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">1987</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph. D)--Massachusetts Institute of Technology, Dept. of Mathematics, 1987.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">This electronic version was submitted by the student author.  The certified thesis is available in the Institute Archives and Special Collections.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Bibliography: leaves 165-168.</dim:field>
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   <dim:field mdschema="dc" element="subject" lang="en_US">Mathematics.</dim:field>
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