John A. Ryan 
Distributive Justice: The Right and Wrong of Our Present Distribution of Wealth 

This book attempts to systematically and comprehensively discuss the fairness of the industrial product distribution process. Since products are actually distributed among landlords, capitalists, merchants, and laborers, the moral aspects of distribution are studied with reference to these four classes. Although their rights and obligations constitute the main theme of this book, they have also worked hard to put forward reform proposals to eliminate the main shortcomings of the current system and bring a greater degree of justice.