The early warning system for the principle of subsidiarity

The Federalist, or, The New Constitution

Alexander Hamilton

[To pay Francis W. Sykes compensation and mileage of Senator.]

United States. Congress. Senate. Committee on Privileges and Elections

The Logic of Scientific Discovery

Karl Popper

Constitutional interpretation

Craig R. Ducat

Grondwet van België, uitgave versierd met platen

National Congress

United States Reports

United States. Supreme Court.

A treatise on the constitutional limitations which rest upon the legislative power of the states of the American union

Thomas McIntyre Cooley

Staatsrecht I

Christoph Degenhart

The problem of federalism

Sobei Mogi

Du principe fédératif et de la nécessité de reconstituer le parti de la révolution

P.-J. Proudhon