00286nam a2200109Ia 4500008004100000020001800041082001500059100001800074245002800092260004500120300001100165190710s9999    xx            000 0 und d  a0-521-42260-4  a512.5 L656  aLint, J H Van 0aCourse in combinatorics  aNew yorkbCambridge university prec1992  aix,530