Liu, C. L.
Elements of discrete mathematics - 2nd ed. - New York McGraw-Hill 1985 - xiv, 433p. ill.
007043476X
Combinatorial analysis
511 / LIE/1985
Elements of discrete mathematics - 2nd ed. - New York McGraw-Hill 1985 - xiv, 433p. ill.
007043476X
Combinatorial analysis
511 / LIE/1985