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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1980.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by William Howard Hanot.</dim:field>
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   <dim:field mdschema="dc" element="subject" lang="en_US">Ocean Engineering.</dim:field>
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   	&lt;Title>A phased array sonar for an underwater acoustic communications system&lt;/Title>
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