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