Current bibliographical information. 

 - New York  U.N.           1992 
 - vi; 316p.  cm. 
 -  Vol.22, No.11 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>a14,11N45,N92, N2.22-11/UN