00325nam a2200121Ia 4500008004100000041000800041082001200049100001600061245003900077260004300116300003200159365001200191240624s9999    xx            000 0 und d  aeng  a330 BAl  aBALTAGI B H  aPANEL DATA THEORY AND APPLICATIONS  c2004aGermanybSpringer-verlag company  aviii, : 380 : p. : cm. ; 22  cERUb25