This document discusses property rights and different property regimes for managing natural resources. It defines four types of property: private, state, common, and open access. Private property relies on voluntary exchange and defined individual ownership rights. State property is managed by the government for public use. Common property is owned collectively by a group with shared norms and rules for sustainable use. Open access resources have no defined ownership rights, leading to overexploitation without management systems. The document also examines alternative resource management approaches like privatization, public management, and collective action, outlining conditions where each may be suitable.