Northern Frontier

Osprey Publishing

Rome's Northern Frontier AD 70-235: Beyond Hadrian's Wall

Motilal Banarsidass Publications

Northern Frontiers of Buddhism: Buddhist Heritage of Afghanistan, Uzbekistan, Kalmykia, Tibet, China, Mongolia and Siberia

Osprey Publishing

Forts Of The American Frontier 1820-91: Central And Northern Plains

Wipf and Stock

Foes From the Northern Frontier: Invading Hordes from the Russian Steppes

Minister of Supply and Services Canada

Northern frontier, Northern homeland            

Independently published

A Gem of the Northern Frontier: Kennecott, Alaska

The Northern Frontiers of Roman Britain          

Northern Frontier, Northern Homeland by Thomas R. Berger (January 01,1971)

Trenchant Books

Kenya's Northern Frontier and Far Beyond: Memoirs of a District Officer

Tierra Krieg

Northern Frontier