Encyclopedia Americana Volume 21;  Oporto to photoengraving 
Bayer Patricia,Clark Cheryl,Fairchild Karen,Feinberg Brian,.Monje Scott C Patricia Raether ,Towers Veronica F,Craig B.Waff 
 - Danbury Connecticut  Scholastic Library Publishing Inc  2003 
 - iii,888 pages;  illustrations,portrait,photographs  25 cm 
 -  volume 1-30 .
<br/><br/><label>ISBN: </label>0-7172-0137-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedias and dictionaries
<br/><br/><label>Dewey Class. No.: </label>031  / G89