00345nam a2200133 a 450000500170000008200150001710000190003210000210005124500360007226000290010830000260013763000270016371000210019020251203091009.0  a511.6bCLA  aGessel, Irad_  aRota, Gian-Carlo  aClassic papers in combinatorics  aBostonbBirkhauserc1987  ax, 489 p.b22 cm.cHB  aCombinatorial analysis  aRota, Gian-Carlo