00672cam a22002171 4500 pa 58000131 DLC 20260227111854.0 870810s1957 ag i100 0 spa c pa 58000131 (OCoLC)16412277 Pan American Union. Library OCoLC OCoLC DLC premarc HC95 .E4 1957 Economic Conference of the Organization of American States (1957 : Buenos Aires) Acta final. Buenos Aires, 1957. 99 (i.e. 135) p. 34 cm. America Economic policy Congresses. America Commercial policy Congresses. 51386 51386