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Overton is the world’s largest searchable index of policy documents, guidelines, think tank publications and working papers. This database can be used by researchers looking to find grey literature and study the dynamics of real world policymaking, as well as to track the impact of their own work on policy, supporting grant, promotion and tenure applications. It can also be used by universities to help find where their work is influencing or changing practice in the real world. Users must register for an account to access trial.