00338nam a2200121Ia 4500008004100000082002300041100001900064245002900083250000600112260004300118300000800161650004700169120425s9999    xx            000 0 und d  a R  428.07  SWA-P3  a Swan, Michael  a Practical English usage  a3  b Oxford University Press, Oxfordc2005  a654  a Standard English usage-Study and teaching