Strategy for the eighties : discussion papers /Struktureller Ansatz zur Analyse internationaler ökonomischer Interdependenzen.Essays in economics. Theories, facts, and policies.Die Erfüllung des russischen Fünfjahrplanes.Essays in economics. Vol. 1.Ensayos sobre economía /Observations on some of the worldwide economic issues of the coming years /The structure of American economy, 1919-1929 : an empirical application of equilibrium analysis /The structure of American economy, 1919-1939. An empirical application of equilibrium analysis /Input - output economics /Die multiregionale Input-Output-Analyse /