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  <titleInfo>
    <title>Variación en maíz y cambios socio - económicos en Chiapas, Méx., 1946 - 1971</title>
  </titleInfo>
  <name type="personal">
    <namePart>Ortega Paczka, Rafael Ángel del Sagrado Corazón</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <typeOfResource>text</typeOfResource>
  <originInfo>
    <place>
      <placeTerm type="text">Chapingo, Méx</placeTerm>
    </place>
    <publisher>El autor</publisher>
    <dateIssued>1973</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <physicalDescription>
    <extent>199 h. : ilus. ; mapas</extent>
  </physicalDescription>
  <note>Tesis (M.C. Esp. en Botánica) -- ENA. Colegio de Postgraduados. Rama de Botánica</note>
  <subject>
    <topic>Etnobotánica</topic>
  </subject>
  <subject>
    <topic>Maíz</topic>
    <topic>Aspectos económicos</topic>
    <topic>Chiapas</topic>
    <geographic>Chiapas</geographic>
  </subject>
  <subject>
    <topic>Maíz</topic>
    <topic>Mejoramiento</topic>
  </subject>
  <subject>
    <topic>Maíz</topic>
    <topic>Variedades</topic>
  </subject>
  <subject>
    <topic>Maíz</topic>
    <geographic>Chiapas</geographic>
  </subject>
  <identifier type="lccn">64756</identifier>
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    <recordCreationDate encoding="marc">971010</recordCreationDate>
    <recordChangeDate encoding="iso8601">20230822114556.0</recordChangeDate>
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