O'Brien, Mary Consilia  Sister. <br/><br/>
Christian social principales 
by Sister Mary Consilia O'Brien, O.P., Ph. D. ; with an introduction by Rt. Rev. Msgr, Fulton J. Sheen, Ph. D. 
 - New York  Kenedy & Sons  1941. 
 - xvi, 621 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociology