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   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Hattis, Philip David</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1980.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">MICROFICHE COPY AVAILABLE IN ARCHIVES AND AERO.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Vita.</dim:field>
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   <dim:field mdschema="dc" element="subject" lang="en_US">Aeronautics and Astronautics.</dim:field>
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   <dim:field mdschema="dc" element="title" lang="en_US">An optimal design methodology for a class of air-breathing launch vehicles</dim:field>
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