%0 Generic %C [S.l.] : %D 1956. %I [s.n.], %T General Agreements on Tariffs and Trade Message from the President of the United States Transmitting the Sixth Protocol of Supplementary Concessions to the General Agreement on Tariffs and Trade, Pursuant to Section 4 of the Trade Agreements Extension Act / %U http://SK8ES4MC2L.search.serialssolutions.com/?V=1.0&L=SK8ES4MC2L&S=JCs&C=TC_020098245&T=marc