00273nam a2200109 a 450000500170000000800410001704100080005810000180006624500290008426400390011330000110015220260717072123.0260701s1978    ii            000 0 eng d  aeng1 aSigler, L. E.10aAlgebra /cSigler, L. E. 1aNew York :bSpringer Books,c1978.  a419 p.