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  <titleInfo>
    <title>Diagnóstico fitosanitario de trigo (Triticum sativum L.) sembrado bajo labranza de conservación en Valle de Santiago, Gto</title>
  </titleInfo>
  <name type="personal">
    <namePart>Nava Sánchez, Miguel Angel.</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>1991</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <physicalDescription>
    <extent>93 h.</extent>
  </physicalDescription>
  <note>D47-92</note>
  <note>Tesis (Ing. Agr. Esp. en Parasitología Agrícola) -- UACH. Departamento de Parasitología Agrícola</note>
  <subject authority="">
    <topic>Labranza</topic>
    <topic>Efecto en suelos</topic>
  </subject>
  <subject>
    <topic>Trigo</topic>
    <topic>Enfermedades</topic>
  </subject>
  <subject>
    <topic>Trigo</topic>
    <topic>Guanajuato</topic>
  </subject>
  <subject>
    <topic>Trigo</topic>
    <topic>Malas hierbas</topic>
    <topic>Control</topic>
  </subject>
  <identifier type="lccn">2800</identifier>
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    <recordCreationDate encoding="marc">971013</recordCreationDate>
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