TY - BOOK T1 - Instability in Export Markets of Under-developed Countries : In Relation to their Ability to Obtain Foreign Exchange from Exports of Primary Commodities 1901 to 1950 PP - New York, YR - 1952 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.140132 OP - 94 ER -