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  <titleInfo>
    <title>The  environmental crisis</title>
    <subTitle>man´s struggle to live with himself</subTitle>
  </titleInfo>
  <name type="personal">
    <namePart>Helfrich, Harold W.</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
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    <role>
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    <place>
      <placeTerm type="text">New Haven and London</placeTerm>
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    <publisher>Yale University Press</publisher>
    <dateIssued>1970</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <language>
    <languageTerm authority="iso639-2b" type="code">spa</languageTerm>
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  <physicalDescription>
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    <extent>X,187 páginas ; 20 cm.</extent>
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  <note type="statement of responsibility">Harold W. Helfrich.</note>
  <note>Bibliografía pie de página</note>
  <subject>
    <topic>CRISIS ECOLÓGICA</topic>
  </subject>
  <subject>
    <topic>CONTAMINACIÓN</topic>
  </subject>
  <subject>
    <topic>RECURSOS NATURALES</topic>
  </subject>
  <subject>
    <topic>CRISIS AMBIENTAL</topic>
  </subject>
  <subject>
    <topic>DESASTRES ECOLOGICOS</topic>
  </subject>
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