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   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">1977</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">MICROFICHE COPY AVAILABLE IN ARCHIVES AND AERONAUTICS.</dim:field>
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   <dim:field mdschema="dc" element="subject" qualifier="lcsh" lang="en_US">Artificial satellites in navigation</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Computationally efficient modelling for long term prediction of global positioning system orbits.</dim:field>
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   	&lt;Title>Computationally efficient modelling for long term prediction of global positioning system orbits.&lt;/Title>
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