there's also this place
http://www.jstor.org
you can put up to 3 books on your "shelf" and read them - just read these -
A Survey of Stone Circles in Cork and Kerry
Seán Ó. Nualláin
Proceedings of the Royal Irish Academy. Section C Archaeology, Celtic Studies, History, Linguistics, Literature
Vol. 84C, 1984, pp. 1 to 77

The Journal of the Royal Society of Antiquaries of Ireland
Vol. 114, (1984)
contains: Grouped Standing Stones, Radial-Stone Cairns and Enclosures in the South of Ireland
Seán Ó Nualláin
pp. 63-79 (17 pages)

Proceedings of the Royal Irish Academy. Section C: Archaeology, Celtic Studies, History, Linguistics, Literature
Vol. 88C, (1988)
contains: Stone Rows in the South of Ireland
Seán Ó. Nualláin
pp. 179-256 (78 pages)

Boulder-Burials
S. Ó Nualláin
Proceedings of the Royal Irish Academy. Section C: Archaeology, Celtic Studies, History, Linguistics, Literature
Vol. 78, (1978), pp. 75-114