Our world through english 3 SB + CD
Autor:Ponce Rivadeneira, Rita; Embleton, Less; Rosero Saavedra, Irene; Rivera Iñiguez, MarleneOur world through english 2 SB + CD
Autor:Embleton, Less; Rivera Iñiguez, Marlene; Rosero Saavedra, Irene; Ponce Rivadeneira, RitaOur world through english 1 SB + CD
Autor:Rivera Iñiguez, Marlene; Rosero Saavedra, Irene; Embleton, Less; Ponce Rivadeneira, RitaTourism through english teacher´s book
Autor:Forrester, Sandra; Lawrence, Clare; Gillian, Cristie