International exhibitions. Convention between the United States of America and other governments, done at Paris November 22, 1928, and Protocol modifying the convention done at Paris November 30, 1972 - Unitrd States. Convention relating to international exhibitions (Washington, D.C. : United States Government Printing Office, 1968)
English and French
"Entered into force with respect to the United States of America June 24, l968."
Keywords: International Exhibitions Bureau; Exhibitions; International exhibitions