EEnglish KnowHow, OpenerEnglish KnowHow, Openerde Angela Blackwell, Naber fMateriasEnglish language, study and teaching, foreign speakersEdiciones (1)English KnowHow Opener (2003)Oxford University Press, USA · inglés · ISBN 9780194536691Más obras de Angela BlackwellGGlobal links, 2Global links, 2