00418nam a2200169Ia 450000500170000000800410001702000120005808200140007010000220008424500410010625000120014726000340015930000080019350500220020194200080022399900170023120241209164217.0241209s9999 xx 000 0 und d afca2876 a512.8/T69 aTomber, Marvin L. 0aIntroduction to contemporary algebra a1a. ed. aEnglewoodbEd. Prenticec1967 a429 aTexto en ingleĢs yLIB c19510d19510