TY  - BOOK
AU  - Hardy,Charles
TI  - The Aural System: Being the Most Direct, the Straight-Line Method for the Simultaneous Fourfold Mastery of a Foreign Language
AV  - LB 
PY  - 2009///
PB  - Project Gutenberg
KW  - Languages, Modern -- Study and teaching
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/29163
ER  -