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1Almmustuhtton 1981FáttátKonfereansapublikašuvdna Girji
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2Almmustuhtton 1991Fáttát “...Mathematics Study and teaching Psychological aspects Congresses...”
Girji -
3Almmustuhtton 1987Fáttát “...Mathematics Study and teaching Psychological aspects Congresses...”
Girji -
4Almmustuhtton 1990Fáttát “...Mathematics Study and teaching Psychological aspects Congresses...”
Girji