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   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">1949</dim:field>
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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Physics, 1949.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">MIT copy bound with: Emissivity of tantalum as a function of temperature and wavelength in the range of 1913 k to 2390 k and 450 to 700 mu. / William Balas. 1949.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Bibliography: leaf 33.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Ira Dyer.</dim:field>
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