References
- Betts , N. L. 1978 . ‘The problem of water supply in Northern Ireland’ . Water Services , 82 : 10 – 16 .
- Common , R. 1977 . “ ‘The relevance of the International Hydrological Decade to Ulster’ ” . Departmental Research Papers No. 1 Geography Dept., The Queen's University of Belfast .
- Manning , P. 1972 . “ ‘The development of the groundwater resources of Northern Ireland’ ” . In Inst. of Civil Engineers , Belfast : N.I. Assocn. .
- 1976 . Ulster Year Book , 109 Belfast : H.M.S.O. .
- Perry , A. H. 1970 . ‘Changes in duration and frequency of synoptic types over the British Isles’ . Weather , 25 : 123 – 26 .
- Ratcliffe , R. A. S. 1976 . ‘The recent dry period’ . Weather , 31 : 271 – 73 .
- Lamb , H. H. . ‘Remarks on the current climatic trend and its perspective’ . Proc. Synop. Long‐Term Climatic Fluctuations, Norwich 1975 ‐ W.M.O . Vol. 421 , pp. 473 – 77 .