Mario Herrera, Carolyn Graham, John Rosenthal, Marilyn Rosenthal y Denise Salazar <br/><br/>
Cool chat : workbook, 1-2 

<br/><br/><label>ISBN: </label>9702603099 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estudio y enseñanza
<br/><br/><label>Dewey Class. No.: </label>428 H433 Ej.2