New framework: 3 intermediate.
Ben Goldstein, José María Ruiz Vaca
Richmond Publishing, 2009.
ISBN 978-84-668-0412-7.
Framework: level 3 : intermediate. Workbook with answer key and transcripts
Ben Goldstein, José María Ruiz
Richmond Publishing, 2005.
ISBN 84-668-0644-X.
Framework, level 3.: with answer key and transcripts
Ben Goldstein, José María Ruiz Vaca
Richmond Publishing, 2004.
ISBN 978-84-294-9618-5.
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