00329nam a2200109 a 450000500170000008200170001710000230003424500560005726000340011330000230014763000490017020251202164231.0 a331.137bCON aWorswick, G. D. N. aConcept and measurement of involuntary unemployment aLondonbAllen and Unwinc1976 a327 p.c24 cm.cPB aUnemployment -- Great Britain -- Congresses.