This text investigates the foundational constitutional and administrative principles that govern the legal framework of the European Community. Trevor C. Hartley, a recognized authority in the field, provides a comprehensive analysis of the treaties, statutes, and judicial precedents that define the relationship between European law and national legal systems. The book utilizes a structured legal framework to explain how these complex regulations function in practice and how they have evolved over time.

Legal scholars and practitioners frequently cite this work as a foundational text for understanding the complexities of European Community law. Readers often note the academic density of the prose, which serves as a reliable resource for students and professionals navigating the intricacies of the European legal system.