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  1. By: Gutierrez, J - Bolland, H. R. (Hans R.)
    Type: Article
    In: Entomologische berichten
    Volume: 46
    Issue: 3
    Date: 1986
    Page Range: 39--43
    Publication Info: Amsterdam
  2. By: Bolland, H. R. (Hans R.)
    Type: Article
    In: Entomologische berichten
    Volume: 43
    Issue: 3
    Date: 1983
    Page Range: 42--47
    Publication Info: Amsterdam
  3. By: Gomaa, E A - Bolland, H. R. (Hans R.)
    Type: Article
    In: Entomologische berichten
    Volume: 42
    Issue: 5
    Date: 1982
    Page Range: 65--67
    Publication Info: Amsterdam
  4. By: Bolland, H. R. (Hans R.)
    Type: Article
    In: Tijdschrift voor entomologie
    Volume: 129
    Date: 1986
    Page Range: 191--215
    Publication Info: [Amsterdam], Nederlandse Entomologische Vereniging,