00427nam a2200169Ia 4500008004100000020001500041082001600056100001900072245002700091260003400118300000800152650001600160650001800176653002700194653001900221700001700240170901s1974    xx            000 0 und d  a0387064281  a511.6bC75C  aCrossley, J.N. 0aCombinatorial Functors  aBerlinbSpringer-Verlagc1974  a146  aMathematics  aPure Sciences  aCombinatorial analysis  aCombinatronics  aNerode, Anil