Current bibliographical information. 

 - New York  U.N.           1992 
 - 191p.  cm. 
 -  V.22, No.3 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>a14,1N45,N93, N2.22-1/UN