books.google.com - Famous for the number-theoretic first-order statement known as Goodstein's theorem, author R. L. Goodstein was also well known as a distinguished educator. With this text, he offers an elementary treatment that employs Boolean algebra as a simple medium for introducing important concepts of modern algebra.The...http://books.google.com/books/about/Boolean_Algebra.html?id=0fxW2KiyxWwC&utm_source=gb-gplus-shareBoolean Algebra