Balakrishnan, V. K. (1995). Schaum's outline of theory and problems of combinatorics. McGraw-Hill.
Trích dẫn kiểu ChicagoBalakrishnan, V. K. Schaum's Outline of Theory and Problems of Combinatorics. McGraw-Hill, 1995.
MLA citiranjeBalakrishnan, V. K. Schaum's Outline of Theory and Problems of Combinatorics. McGraw-Hill, 1995.
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