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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1994.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (p. 168-176).</dim:field>
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   <dim:field mdschema="dc" element="title" lang="en_US">Borehole wave propagation in isotropic and anisotropic media : three-dimensional finite difference approach</dim:field>
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   	&lt;Title>Borehole wave propagation in isotropic and anisotropic media : three-dimensional finite difference approach&lt;/Title>
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