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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Parra, O O - Gonzalez, H - Gonzalez, M
    Type: Article
    In: Gayana
    Volume: 41
    Date: 1984
    Page Range: 85--118
    Publication Info: [Concepción] Chile, Instituto Central de Biología, Universidad de Concepción, 1961-
  2. By: Parra, O O - Rivera, P R - Floyd, Gary L. - Wilcox, L. W.
    Type: Article
    In: Gayana
    Volume: 48
    Issue: 1-4
    Date: 1991
    Page Range: 101--110
    Publication Info: [Concepción] Chile, Instituto Central de Biología, Universidad de Concepción, 1961-
  3. By: Theoduloz, Cristina - Parra, O O
    Type: Article
    In: Gayana
    Volume: 41
    Date: 1984
    Page Range: 201--224
    Publication Info: [Concepción] Chile, Instituto Central de Biología, Universidad de Concepción, 1961-
  4. By: Parra, O O - Avilés, Dalba - Becerra, José. - Dellarossa, V - Montoya-M., Rolando
    Type: Article
    In: Gayana
    Volume: 43
    Issue: 1-4
    Date: 1987
    Page Range: 15--18
    Publication Info: [Concepción] Chile, Instituto Central de Biología, Universidad de Concepción, 1961-