Elton, Geoffrey Rudolph  1921-1994 <br/><br/>
Political history :  principles and practice / 
By G.R. Elton. 
 - New York ;  London :  Basic Books,  1970. 
 - 184 p. ;  22 cm. 
<br/><br/>Index p. 181-184 
<br/><br/>Contents: The categories.-Criticism.-Evidence.-Explanation and cause.-The end product 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political history--World