Folia Oeconomica Stetinensia > 2012 > 10 > 2 > 50-59
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journal ISSN : | 1898-0198 |
DOI | 10.2478/v10031-011-0045-7 |
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Bibliography
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Churgin, J. (1985). How to Count the Uncountable. Warsaw: Common Knowledge.
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Encyclopedia (2004). Kraków: Polish Scientific Publishers PWN, Vol. 10.
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Stevens, S.S. (1946). On the Theory of Measurement Scales. Science, Vol. 103, No. 2684.