"General Theory of Administration" is a fundamental work in the study of administration, exploring the development of the main theories and approaches that have shaped modern management. Written by various authors over the years, this book examines the origins, evolution, and applicability of different schools of thought, including scientific management, classical theory, the humanistic approach, behavioral theory, systems theory, and the contingency approach, among others.

The work begins with an analysis of the foundations of Frederick Taylor’s scientific management, which emphasizes rationalization and efficiency in work, and Henri Fayol’s classical theory, which highlights management functions and principles. The book then explores the influence of the human relations theory, introducing a more humanized approach that values motivation and employee well-being. Building on this humanistic perspective, the text advances to behavioral theory, emphasizing individual behavior and psychological factors within the organizational environment.

Next, "General Theory of Administration" delves into systems theory, a holistic view in which the organization is understood as an interdependent system, and contingency theory, which argues that effective management depends on context and adaptation to environmental variables. The book also discusses modern approaches that integrate technology, innovation, and adaptation to global and dynamic scenarios, including total quality management, reengineering, and agile management models.

In addition to providing an understanding of the main administrative theories, the book aims to integrate these perspectives into the contemporary context, discussing how each theory offers tools that can be applied practically and strategically in today’s organizations. "General Theory of Administration" is, therefore, an essential work for students and professionals seeking a comprehensive, critical, and evolutionary view of management, addressing not only what has been developed in the field but also the challenges and innovations shaping the future of the area.