00345nam a2200121Ia 450000500170000000800410001702000150005805000200007310000170009324500610011026000350017165000170020620251229085432.0251229s9999    xx            000 0 und d  a0631140948  aHD 5707.5 .S56   aSinclair, P. 0aUnemploymentb economic theory and evidence.cP Sinclair  aOxfordb Basil Blackwellc1987  aUnemployment