Gregg, J. R. (1954). The language of taxonomy: An application of symbolic logic to the study of classificatory systems. Columbia University Press.
Citace podle Chicago (17th ed.)Gregg, John Richard. The Language of Taxonomy: An Application of Symbolic Logic to the Study of Classificatory Systems. New York: Columbia University Press, 1954.
Citace podle MLA (9th ed.)Gregg, John Richard. The Language of Taxonomy: An Application of Symbolic Logic to the Study of Classificatory Systems. Columbia University Press, 1954.
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