Child welfare legislation in Maryland, 1634-1936 / Edward J. O'Brien. - O'Brien, Edward J. (OLS)http://pul/name/107137; Catholic University of America. Tesi. (OLS)http://pul/name/106692 (The Catholic University of America, 1937)
Tesi. The Catholic University of America. School of Social Work. 1937.
Bibliografia in nota a piè pagina.