00346nam a2200133Ia 4500008004100000041000800041082001600049100002000065245004500085250001400130260003100144300003000175365000700205240624s9999    xx            000 0 und d  aeng  a515.625 KEL  aKELLEY WALTER G  aDIFFERENCE EQUATIONS AN INTRODUCTION WIT  a(2nd ed.)  c2006aCaliforniabElsevier  aix, : 403 : p. : cm. ; 24  cRS