00319nam a2200121Ia 4500008004100000082001500041100001600056245005100072260004200123300000800165942000700173999001700180190709s9999    xx            000 0 und d  a517.382C45  aChorlton, F 0aOrdinary differential and difference Equations  aLondonbD. Van Nostrand Companyc1965  a281  cBK  c41637d41638