Universal Decimal Classification UDC Consortium 2019-03-06 2019-03-06 14:18:16 en Rhetoric of speech. Art or technique of oral expression808.5 Class here voice, expression, gesture. Denote details by colon combination if required Retórica del habla. Arte o técnica de la expresión oral Retórica do discurso. Arte ou técnica de expressão oral 2019-03-06 15:44:11