TY  - BOOK
AU  - Ostrowska,Sabina
AU  - Patterson,Alison Ramage
AU  - Firth,Matt
TI  - Unlock: listening and speaking skills : teacher's book 
SN  - 9781107662117
PY  - 2014///
CY  - Cambridge
PB  - Cambridge Discovery Education
KW  - English language
KW  - Study and teaching
KW  - Foreign speakers
KW  - Spoken English
KW  - Audio-visual aids
N1  - Title on DVD : Presentation plus; vol.1. Teacher's book 1 by Sabina Ostrowska -- vol.2. Teacher's book 2 by Alison Ramage Patterson -- vol.3. Teacher's book 3 by Matt Firth
ER  -