Cheetham, Nicolar <br/><br/>
Keeper of the Keys:  the pope in history / 
by Nicolar Cheetham 
 - London :  Mac Donald and Co,  1982. 
<br/><br/><label>ISBN: </label>0356085848 
<br/><br/><label>Subjects--Index Terms: </label>Chriatianity Ecclesiastical Polity Pope Religion