00337nam a2200109 a 450000500170000008200160001710000220003324500390005526000670009430000160016149000500017720251203091555.0  a512.4,bnag  aNagata, Masayoshi  aPolynomial rings and affine spaces  aRhoda IslaNew DelhibAmerican Mathematical society, 1978c1978  a33p, 23 cm.  aRegional conference series in mathematicsd37