1. The feasibility of supply seawater from a well field to the new Ibiza desalination plant, Report No. 606A/ 1291 for Hydrotechnik, Austria, by Engineering Geology Ltd., Godalming, Surrey GU7 1LG, UK.
2. Project documents, drawings, reports, etc. from Hydrotechnik, Austria.
3. Operating data from Hydrotechnik, Ibiza, Spain.