00349nam a2200145Ia 4500008004100000020001500041041001200056082001100068100001600079245004900095250000800144260002900152300000800181650001400189221030s9999    xx            000 0 und d  a8190645102  aEnglish  a105.23  aS. B. Singh 0aCombinatorics & Graph Theorycby S. B. Singh  a3rd  bKhanna  Pub.aDelhic200  a463  aComputers