Terry Burke & Angela Genn-Bash 
Competition in Theory and Practice [PDF ebook] 

What is the role of competition in economic activity? How can it be understood? How can it be regulated? Competition is a buzz word in economic policy and in commerce. Yet it is given widely varying roles in different models and is viewed in very different ways by different schools. This book, published in 1991, provides a clear exposition of the major theoretical approaches to competition and an assessment of competition policy in the major economic powers.