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1Almmustuhtton 1970Fáttát “...Earth stations (Satellite telecommunication)...”
Konfereansapublikašuvdna Girji -
2Almmustuhtton 1969Fáttát “...Telecommunication Congresses....”
Konfereansapublikašuvdna Girji -
3Almmustuhtton 1987Fáttát “...Telecommunication systems Great Britain Congresses....”
Konfereansapublikašuvdna Girji -
4Almmustuhtton 1983Fáttát “...Telecommunication systems Congresses....”
Girji