Indexes

• Union generale d'editions. 1
• Union Internationale d'Histoire et de Philosophie des Sciences 1
• Union internationale d'histoire et de philosophie des sciences. Division d'histoire des sciences 1
• Union Internationale des Organismes Familieux 1
• Union Pour la France 1
• Unione Liberale 1
• Unione popolare fra i cattolici d'Italia. Gruppo di San Camillo (Roma). 1
• United Grand Lodge of England. 1
• United Nations Educational, Scientific and Cultural Organization zob. UNESCO 2
• United Nations High Commissioner for Refugees 1
• UNITED PUBLISHERS LTD . 1
• United States Chess Association 5
• United States Departament of Agriculture (Waszyngton). Library 1
• United States Departament of Agriculture (Waszyngton). Ofice of Publications 1
• United States Department of Agriculture 1
• United States Department of the Interior Fish and Wildlife Service 1
• United States Government Printing Office. 3
• United States Information Service. 1
• United States. Information Service (Manila) 1
• Universidad de Buenos Aires 1