00269nam a2200109Ia 4500008004100000041001200041082001100053100001600064245005400080260000600134650001900140221030s9999    xx            000 0 und d  aEnglish  a105.23  aS. B. Gupta 0aDiscrete Mathematics & Structurescby S. B. Gupta  c0  aBE Mathematics