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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1993.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (leaves 333-337).</dim:field>
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   <dim:field mdschema="dc" element="title" lang="en_US">Mid-frequency acoustic backscattering from finite cylindrical shells and the influence of helical membrane waves</dim:field>
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   	&lt;Title>Mid-frequency acoustic backscattering from finite cylindrical shells and the influence of helical membrane waves&lt;/Title>
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