Christophersen, Paul <br/><br/>
An advanced English grammar / 
by Paul Christophersen and Arthur O. Sandved 
 - London :  MacMillan,  1969 
 - ix, 278 p. :  23 cm. 
<br/><br/><label>ISBN: </label>0333106431 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar