Thakur B. R. S. G. P., . (2000). Discrete mathematics. Agra: Ram Prasad & Sons.
Thakur B R Shrivastava G P, . 2000. Discrete mathematics. Agra: Ram Prasad & Sons.
Thakur B R Shrivastava G P, . Discrete mathematics. Agra: Ram Prasad & Sons. 2000.