00490nam a2200169Ia 4500008004100000082001700041100002000058245002200078260004600100300000800146650001600154650001800170653001200188942001200200999001500212952009300227170901s1968    xx            000 0 und d  a512.89bG69U  aGratzer, George 0aUniversal Algebra  aNew JerseybD. Van Nostrand Companyc1968  a368  aMathematics  aPure Sciences  aAlgebra  2ddccBK  c4611d4611  00102ddc4070aRAUbRAUd2017-10-18l0o512.89 G69Up12437r2017-10-18w2017-10-18yBK