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  1. By: Calderón Sáenz, Eduardo
    Type: Article
    In: Cryptogamie. Algologie
    Volume: 2
    Issue: 4
    Date: 1981
    Page Range: 267--269
    Publication Info: Paris, ADAC, 1980-2018
  2. By: Calderón Sáenz, Eduardo
    Type: Article
    In: American fern journal
    Volume: 90
    Date: 2000
    Page Range: 105--108
    Publication Info: [Washington, etc.] American Fern Society