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   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology, 1922.</dim:field>
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   <dim:field mdschema="dc" element="title" lang="en_US">An examination of some lead ores from the Coeur d'Alene District, Idaho</dim:field>
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