Introduces structural and homological methods of ring theory, and explains the relationship between semidistributive modules and flat, projective, injective, multiplication, and Bezout modules. Contains chapters on areas such as radicals and semisimple modules, rings of quotients, flat modules and semiperfect rings, semiheridity and invariant rings, endomorphism rings, skew-injective rings, and monoid rings. Includes chapter exercises. Background to the material can be found in most graduate level texts in algebra. Annotation copyrighted by Book News, Inc., Portland, OR