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  <titleInfo>
    <title>Poblaciones, biomasa y banco de semillas de arvenses en cultivo de maíz Zea mays L. y frijol Phaseolus vulgaris L. efecto de métodos de control y rotaciones</title>
  </titleInfo>
  <name type="personal">
    <namePart>Chávez Cajigas, Manuel.</namePart>
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    <place>
      <placeTerm type="text">Chapingo, Méx</placeTerm>
    </place>
    <publisher>El autor</publisher>
    <dateIssued>1987</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <physicalDescription>
    <extent>179 h. ; gráfs</extent>
  </physicalDescription>
  <note>Tesis (M.C. Esp. en Botánica) -- CP. Centro de Botánica</note>
  <subject>
    <topic>Biomasa</topic>
  </subject>
  <subject>
    <topic>Frijol</topic>
    <topic>Malas hierbas</topic>
    <topic>Control</topic>
  </subject>
  <subject>
    <topic>Maíz</topic>
    <topic>Malas hierbas</topic>
    <topic>Control</topic>
  </subject>
  <subject authority="">
    <topic>Malas hierbas</topic>
    <topic>Semillas</topic>
  </subject>
  <subject>
    <topic>Materia seca</topic>
    <topic>Determinación</topic>
  </subject>
  <subject>
    <topic>Rotación de cultivos</topic>
  </subject>
  <identifier type="lccn">23345</identifier>
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    <recordCreationDate encoding="marc">971013</recordCreationDate>
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