00335nam a2200109Ia 4500008004100000040003800041100001700079245004000096260005400136300001500190653002000205211217s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aCliford, A H 0aAlgebric theory of semigroups vol-2  bAmerican mathematical societyaRhode Islandc1971  axv,352p p.  aAlgebric theory