Frege,  . <br/><br/>
Sence and reference /  
Frege. 
 - NULL ;   NULL. 
<br/><br/>NULL 
<br/><br/><label>ISBN: </label> NULL (Binding) 
<br/><br/><label>Subjects--Index Terms: </label>SENCE 
<br/><br/><label>Dewey Class. No.: </label>121.35  / FRE/S