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- E-bookFingeralphabet Österreich – Ein Project FingerAlphabet HandbuchS.T. Lassal
- E-bookThe Austrian Sign Language Alphabet – A Project FingerAlphabet Reference ManualS.T. Lassal
- E-bookThe Liechtenstein Sign Language Alphabet – A Project FingerAlphabet Reference ManualS.T. Lassal
- E-bookFingeralphabet Deutschschweiz – Ein Project FingerAlphabet HandbuchS.T. Lassal
- E-bookFingeralphabet Luxemburg – Ein Project FingerAlphabet HandbuchS.T. Lassal
- E-bookThe German Sign Language Alphabet – A Project FingerAlphabet Reference ManualS.T. Lassal
- E-bookSéries: Project FingerAlphabet BASICS.T. Lassal
- E-bookFingeralphabet Luxembourg – A Project FingerAlphabet Reference ManualS.T. Lassal
- E-bookFingeralphabet Deutschland – Ein Project FingerAlphabet HandbuchS.T. Lassal
- E-bookFingeralphabet Liechtenstein – Ein Project FingerAlphabet HandbuchS.T. Lassal
- E-bookThe Flemish Sign Language Alphabet – A Project FingerAlphabet Reference ManualS.T. Lassal