Maas, H. Sorting things out: The economist as an armchair observer / Harro Maas. Histories of scientific observation.(2011).
Citace podle Chicago (17th ed.)Maas, Harro. "Sorting Things Out: The Economist as an Armchair Observer / Harro Maas." Histories of Scientific Observation.(2011) .
Citace podle MLA (8th ed.)Maas, Harro. "Sorting Things Out: The Economist as an Armchair Observer / Harro Maas." Histories of Scientific Observation.(2011), .
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