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   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Ronald J. Proulx and Paul J. Cefola.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Fonte, Daniel John</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department">Massachusetts Institute of Technology. Department of Aeronautics and Astronautics</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2009-11-06T16:05:45Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="available">2009-11-06T16:05:45Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">1993</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (p. 305-315).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Daniel Fonte, Jr.</dim:field>
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   <dim:field mdschema="dc" element="subject" lang="en_US">Aeronautics and Astronautics</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Implementing a 50x50 gravity field model in an orbit determination system</dim:field>
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   	&lt;Title>Implementing a 50x50 gravity field model in an orbit determination system&lt;/Title>
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