Boylan, M. Eugéne <br/><br/>
Difficulties in mental prayer 

 - 9.ed. 
 - Dublin :  M.H. Gill,  1950 
 - 130p.;  19 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oración
<br/><br/><label>Universal Decimal Class. No.: </label>248.143