KORBONSKI, Andrzej - LAZARCIK, Gregor. Polish Agricultural Production, Output, Expenses, Gross and Net Product, and Productivity, 1934-1938, 1937, and 1946-1970. 1. ed. New York : Economic Studies Riverside Research Institute, 1972. 60 s. Occasional Papers of the Research Project on National Income in East Central Europe, 37. [Počet ex. : 1, z toho voľných 1, prezenčne 0]