00290nam a2200109Ia 4500008004100000082001500041100002200056245004400078260004000122300001000162650000800172060110s9999    xx            000 0 und d  a512bALB/S  aALBERT, Adrisan A  aStructures of algebracAdrisan A Albert  bAmerican Mathematical Soceityc1961  a283p.  a512