Enciclopedia simultánea de correspondencia comercial en 6 idiomas. 

 - Barcelona  Ediciones Distein  1976 
 - 495 p. 
<br/><br/> Text in English, Spanish, French, German, Italian, Portuguese. 
<br/><br/><label>ISBN: </label>8485117239 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Commercial correspondence , Spanish.<br/>Commercial correspondence, Portuguese.<br/>Commercial correspondence, Italian.<br/>Commercial correspondence, German<br/>Commercial correspondence, French.<br/>Commercial correspondence, English