Plantinga, Alvin <br/><br/>
The nature of necessity. 

 - Oxford  Clarendon Press  1974. 
 - ix, 255 p.  23 cm. 
 - Clarendon library of logic and philosophy .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0198244045 
<br/><br/><label>LCCN: </label>74174797  
<br/><br/><label>Nat. Bib. No.: </label>GB*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modality Logic<br/>Good and evil<br/>Necessity Philosophy<br/>Essence Philosophy
<br/><br/><label>LC Class. No.: </label>BC199.M6  / P55 
<br/><br/><label>Dewey Class. No.: </label>160