=LDR 22 4500 =001 7092 =082 04$a941.67 GRI =100 1\$aGribbon, H.D. =245 10$aThe History of Water Power in Ulster =260 \\$aNewton Abbot :$bDavid & Charles,$c1969 =650 \0$aBooks =852 \\$bFreeman Library$h941.67 GRI