books.google.com - This introductory account of commutative algebra is aimed at advanced undergraduates and first year graduate students. Assuming only basic abstract algebra, it provides a good foundation in commutative ring theory, from which the reader can proceed to more advanced works in commutative algebra and algebraic...http://books.google.com/books/about/Steps_in_Commutative_Algebra.html?id=Oi4x9NznFEUC&q=G+N0&utm_source=gb-gplus-shareSteps in Commutative Algebra