Historic Monuments of Northern Ireland : An introduction and guide /
Department of the Environment for Northern Ireland.
- 6th ed.
- Belfast : H.M.S.O., 1983.
- xii,167p.,[8]p. of plates : ill(some col.), maps,plans ; 21cm.
Previous ed.: published in 2 vols. 1967. Bibliography: p157-160. _ Includes index.