The knowledgebook :  everything you need to know to get by in the 21st Century 

 - Washington, D.C., Wash. :  National Geographic Society,  c2009 
 - 400 p. :  ill. (chiefly col.), col. maps 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9781426205187 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENCYCLOPEDIAS AND DICTIONARIES
<br/><br/><label>LC Class. No.: </label>AG6  / K568