Year book :  a review of then events of 1999-. 

 - Chicago :  World Book,  c1999. 
 - v. : ill. 
 - part col. .
<br/><br/> An annual supplement to the World book encyclo pedia. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclo pedias and dictionaries.