Combined Index to The New Book Knowledge. vol.21 

 - China:  Grolier International,  1981. 
 - vol.21; 411p.;  col.ill.;  26 cm. 
<br/><br/><label>ISBN: </label>7172051126 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia
<br/><br/><label>Dewey Class. No.: </label>030  / COM