Di Pietro, Robert J. <br/><br/>
Language structures in contrast 
Robert J.Di Pietro 
 - second edition 
 - Rowley, Massa  Newburry House Publishers  1976 
 - xix, 193 p. ; 24cm. 
<br/><br/><label>ISBN: </label>912066113 
<br/><br/><label>LCCN: </label>71-142801 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Structural linguistics<br/>Grammar, Comparative and general<br/>Language and languages--Study and teaching