Niklas Luhmann Systems theory Functional differentiation Nonprofit organizations CSR Economic system Landwirtschaft Agrarreform Capitalism Chester Barnard Commercialization Complexity Cooperatives Corporate social responsibility Human rights John Rawls Justice Mittel- und osteuropäische Länder Morality Nonprofit organization Open systems Self-regulation Societal environment Sustainability Utilitarianism sustainability Agrarian vision Agriculture Agroholdings Alfred North Whitehead