Hutchain, Robert M. . <br/><br/>
Encyclopaedia Britannica Vol.21 /  Textual Documents 
Robert M.Hutchian. 
 - Chicago :  William Benton ,  1973p.. 
 - 1149p. :  ill ;  30cm. . 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedia Britannica 
<br/><br/><label>Dewey Class. No.: </label>030  / Hu 97 En