The World book encyclopedia / 

 - Chicago :  World Book-Childcraft International,  c1982. 
 - 21v. (1v. lx, 976 p.), (2v. ii, 640p.), (3v. ii, 426p.), (4v. ii, 427 - 974 p.), (v5. ii, 321 p.), (6v. ii, 368 p.), (7v. ii, 518 p.), (8v. ii, 438 p.), (9v. ii, 428 p), (10v. ii, 416 p.), (11v. ii, 318 p.), (12v. ii, 470 p.), (13v. ii, 831 p.), (14v. ii, 684 p.), (15v. ii, 814 p.), (16v. ii, 846 p.), (17v. ii, 446 p.), (18v. ii, 447 - 860p.), (19v. ii, 446 p.), (20v. ii, 358 p.), (21v. ii, 510 p.) 
<br/><br/> Australasia suppl. (2 v.) and British Isles suppl. (2 v.) are each numbered as v. 23-24. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>071660082X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries.<br/>Encyclopedias and dictionaries.
<br/><br/><label>Dewey Class. No.: </label>031  / WOR