Gerber . Philip L  Neuschuiz Violet  Haider . Norman L  Smith . Vernon H <br/><br/>
Effective English 

 - Morristown  Silver Burdeitt Company  1979 
 - 395 p. 
<br/><br/><label>ISBN: </label>0-382-03302-7 
<br/><br/><label>Dewey Class. No.: </label>420  / GER