Kaleck, M. (1969). Studies in the Theory of Business Cycles 1933-1939. Polish scientific publishers.
Tohutoru Kātū Chicago (17th ed.)Kaleck, Michal. Studies in the Theory of Business Cycles 1933-1939. Poland: Polish scientific publishers, 1969.
Tohutoro MLA (9th ed.)Kaleck, Michal. Studies in the Theory of Business Cycles 1933-1939. Polish scientific publishers, 1969.
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