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![Combinatorial Optimization_cover](https://img.perlego.com/books/RM_Books/wiley_hlvwyirv/9781118031391_200_300.webp)
Combinatorial Optimization
William J. Cook, William H. Cunningham, William R. Pulleyblank, Alexander Schrijver
2011
![Geometry, Combinatorial Designs and Related Structures_cover](https://img.perlego.com/books/RM_Books/cup_kagcsvfg/9780511893407_200_300.webp)
Geometry, Combinatorial Designs and Related Structures
J. W. P. Hirschfeld, S. S. Magliveras, M. J. de Resmini
1997