John Harper Publishing

Treaties and Alliances of the World - the complete guide to the international system and our oldest title, continuously in print through successive editions since 1968.

Political Parties of the World - first published in 1980 and renowned as the most complete reference guide available to the world's political parties.

Revolutionary and Dissident Movements of the World - comprehensive reference data on secessionist, revolutionary, religious fundamentalist and other dissident and terrorist groups

Border and Territorial Disputes of the World - reference data on 100 disputes worldwide

Trade Unions of the World - the only global directory of world trade unionism