Catholic Association of International Peace. Committee on Sources of International Enmity & Catholic Association for International Peace. Europe Committee. (1930). Causes of war: And, Security, old and new : preliminary studies presented to the Catholic Association for International Peace by the Committee on Sources of International Enmity and the Europe Committee. The Association.

Catholic Association of International Peace. Committee on Sources of International Enmity agus Catholic Association for International Peace. Europe Committee. Causes of War: And, Security, Old and New : Preliminary Studies Presented to the Catholic Association for International Peace by the Committee on Sources of International Enmity and the Europe Committee. Washington, D. C.: The Association, 1930.

Catholic Association of International Peace. Committee on Sources of International Enmity agus Catholic Association for International Peace. Europe Committee. Causes of War: And, Security, Old and New : Preliminary Studies Presented to the Catholic Association for International Peace by the Committee on Sources of International Enmity and the Europe Committee. The Association, 1930.