This 3rd revised edition is quite comprehensive and an essential reading for anyone wanting to understand the process by which public policy is formulated, implemented and evaluated. This new, enlarged edition provides a concise and complete overview of a range of theories and approaches in the study of public policy. This book explains clearly the importance of the relationship between theoretical and practical aspects of the organisations involved in the process of public policy. It provides a rich and easy to comprehend coverage of the relevant concepts along with illustrations from a diverse set of institutions and people. This edition is expected to meet the growing needs of academicians, students and those preparing for civil services and other competitive examinations.