TY  - BOOK
AU  - Butterworth,Anna
TI  - Harmony in practice
SN  - 978 1 85472 833 3
PY  - 2006///
CY  - London
PB  -  : The Associated Board of the Royal Schools of Music
KW  - Harmonia
KW  - Ensenyament
N1  - Amb exemples musicals
ER  -