00361nam a2200133 a 450000500170000002000150001708200150003210000260004724500380007325000130011126000360012430000210016049000460018120251203111235.0  a1584885068  a511.6bHAN  aRosen, Kenneth H. Ed.  aHandbook of combinatorial designs  a2nd Edn.  aBoco RatonbChampman&Hallc2007  a984p.c24cm.cHB  aDiscrete Mathematics and its applications