T he future o f the international railways of South America. A historical approach / Robert T. Brown. -- T he basic need s strategy as an option. Its possibilities in the Latin American context / Jorge Graciarena. -- T he process of modernization in Latin American agriculture / Gerson Gomes and Antonio Pérez. -- Plans versus planning in Latin American experience / Carlos A. de Mattos. -- The Brazilian economy: option for the eighties / Pedro Sampaio Malan. -- Contem porary protectionism and the exports of developing countries / Gary P. Sampson. -- Economic Policy: Science or Ideology? (Part Two) / Carlos Lessa.