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1Dahkki Schirmer, Barbara R.Fáttát “...Deaf Means of communication Study and teaching (Elementary)...”
Almmustuhtton 2000
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2Dahkki Paul, Peter V.Fáttát “...Deaf Means of communication Study and teaching....”
Almmustuhtton 2001
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3Dahkki Quigley, Stephen P. (Stephen Patrick), 1927-Fáttát “...Deaf Means of communication Study and teaching....”
Almmustuhtton 1984
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4Dahkki McAnally, Patricia L., 1927-Fáttát “...Deaf Means of communication Study and teaching United States....”
Almmustuhtton 2004
Girji