Elements of discrete mathematics অনুযায়ী Liu, C. L. (Chuang Laung) 1934-

Pascal অনুযায়ী Belford, Geneva G.

Introduction to combinatorial mathematics অনুযায়ী Liu, C. L. (Chung Laung), 1934-

Introduction to combinatorial mathematics অনুযায়ী Liu, C L.