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  <titleInfo>
    <title>Geology and petrology of the San Juan region, southwestern Colorado</title>
  </titleInfo>
  <name type="personal">
    <namePart>Larsen, Esper S. (Esper Signius)</namePart>
    <namePart type="date">1879-1961</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Cross, Whitman</namePart>
    <namePart type="date">1854-1949</namePart>
    <role>
      <roleTerm type="text">joint author.</roleTerm>
    </role>
  </name>
  <typeOfResource>text</typeOfResource>
  <genre authority="marc">bibliography</genre>
  <originInfo>
    <place>
      <placeTerm type="code" authority="marccountry">dcu</placeTerm>
    </place>
    <place>
      <placeTerm type="text">Washington</placeTerm>
    </place>
    <publisher>U.S. Govt. Print. Off.</publisher>
    <dateIssued>1956</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <language>
    <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
  </language>
  <physicalDescription>
    <form authority="marcform">print</form>
    <extent>xiv, 303 p. illus., maps (3 col.) diagrs. (1 col.) tables. 29 cm.</extent>
  </physicalDescription>
  <note type="statement of responsibility">by Esper S. Larsen, Jr., and Whitman Cross.</note>
  <note>Part of illustrative matter folded in pocket.</note>
  <note>Selected bibliography : p. 297-299.</note>
  <subject>
    <geographicCode authority="marcgac">n-us-co</geographicCode>
  </subject>
  <subject authority="lcsh">
    <topic>Geology</topic>
    <geographic>Colorado</geographic>
  </subject>
  <subject authority="lcsh">
    <topic>Petrology</topic>
    <geographic>Colorado</geographic>
  </subject>
  <subject authority="lcsh">
    <geographic>San Juan Mountains (Colo. and N.M.)</geographic>
  </subject>
  <classification authority="lcc">QE75 .P9 no. 258</classification>
  <classification authority="ddc">557.88</classification>
  <identifier type="lccn">gs 56000138</identifier>
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