Bibliographic Record / Registro Bibliográfico
| Author / Autor | Hardy, Charles | 
| Title / Título | The Aural System
Being the Most Direct, the Straight-Line Method for the Simultaneous Fourfold Mastery of a Foreign Language / Idioma. | 
| Language / Idioma | English | 
| LoC Class | PB: Language and Literatures: General works | 
| LoC Class | LB: Education: Theory and practice of education | 
| Subject / Asunto | Language / Idiomas, Modern -- Study and teaching | 
| EText-No. / Texto No. | 29163 | 
| Release Date / Fecha impresión | 2009-06-19 | 
| Copyright Status/ Derechos Autor | Not copyrighted in the United States / Sin Copyright en Estados Unidos |