Books by Gearóid Mac Niocaill
Crown surveys of lands, 1540-4
Crown surveys of lands, 1540-41
Keimelia
Oceanic whitecaps and their role in air-sea exchange processes
The Annals of Ulster (to A.D. 1131)
Irish population before Petty
Irish population before Petty
The medieval Irish annals
The medieval Irish annals
The Red book of the Earls of K
The Red book of the Earls of Kildare
Notitiae as Leabhar Cheanannai
Notitiae as Leabhar Cheanannais 1033-1161