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LEHMANN, H. 1989 Auswirkungen der Abwassereinleitungen Hamburgs auf den Sauerstoffhaushalt der Elbe. Wasser Abwasser, 130, 181-188. LEHMANN, J., MOCK, D., STURENBERG, F-J. & BERNARDET, J-F. 1991 First isolation of Cytophaga psychrophila from a systematic disease in eel and cyprinids. Diseases of Aquatic Organisms, 10(3), 217-220. LEHNE, K.A. 1990 Fracture detection from logs of North Sea chalk. pp.263-271 in, Geological applications of wireline logs, (ed.A.Hurst, M.A.Lowell & A.C.Morton). London: Geological Society. 357pp. (Geological Society Special Publication 48.) LEHNE, K.A. & AADNOY, B.S. 1991 Quantitative analysis of stress regimes and fractures from logs and drilling records of a North Sea chalk field (Tommeliten Gamma Chalk). Log Analyst, 32(1), p.43. (Abstract) LEIN, T.E., SJOTUN, K. & WAKILI, S. 1991 Mass-occurrence of a brown filamentous endophyte in the lamina of the kelp Laminaria hyperborea (Gunnerus) Foslie along the southwestern coast of Norway. Sarsia, 76(3), 187-193. 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LERICOLAIS, G. & BERNE, S. 1990 Contribution of very high resolution seismic reflection digital acquisition and processing to the study of continental-shelf sand bodies. Bulletin Centres de Recherche Exploration-Production Elf Aquitaine, 14(1), 185-196. (In French) LEROUX, A. & THOMAS, A. 1989 Evolution de la population bretonne de la sterne de Dougall et strategie de protection. Penn ar Bed, 134(20-4), 16-18. Lerwick Harbour. (brochure) Lerwick: Lerwick Harbour Trust. 23pp. 1989. LEUSCHNER, C. & SCHERER, B. 1989 Fundamentals of an applied ecosystem research project in the Wadden Sea of Schleswig-Holstein. Helgolander Meeresuntersuchungen, 43(3-4), 565-574. LEUSSEN, W. VAN & VELZEN, E. VAN 1990 High concentration suspensions: their origin and importance in Dutch estuaries and coastal waters. Journal of Coastal Research, Special Issue, No.5, 1-22. LEUSSEN, W. VAN 1991 Fine sediment transport under tidal action. Geo-Marine Letters, 11(3/4), 119-126. LEVAVASSEUR, G. 1987 Teneur en pigments et activite photosynthetique comparees de diverses algues macrophytes de la zone intertidale de Roscoff. Cryptogamie, Algologie, 8(4), 253-271. LEVELL, D. 1987 A summary of research and monitoring studies carried out in North Sea oilfields by the Oil Pollution Research Unit 1973-1986. pp.295-297 in, Fate and effects of oil in marine ecosystems.., (ed. J.Kuiper & W.J. van den Brink). Dordrecht: Martinus Nijhoff. LEVERIDGE, B.E., HOLDER, M.T. & GOODE, A.J.J. 1990 Geology of the country around Falmouth: memoir for 1:50,000 geological sheet 352 (England and Wales). London: Her Majesty's Stationery Office for British Geological Survey. 70pp. LEVKOV, L. 1989 Modelling of atmospheric transport of trace metals including the role of precipitation clouds. World Meteorological Organization, Special Environmental Report, No.17, 193-196. LEVKOV, L. 1989 Test of a parameterization scheme for cloud microphysical processes in a 3-D mesoscale model. 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LEYMANN, G. 1988 A contribution to the discussion on the eutrophication of coastal water. Wasser und Boden, 40(11), 644-646. L'HARDY-HALOS, M-T. & RUENESS, J. 1990 Comparative morphology and crossability of related species of Aglaothamnion (Rhodophyta). Phycolgia, 29(3), 351-366. L'HARDY-HALOS, M-T. & MAGGS, C.A. 1991 A novel life history in Aglaothamnion diaphanum sp. nov. (Ceramiaceae, Rhodophyta) from Brittany and the British Isles. Phycologia, 30(5), 467-479. LIA, A. 1991 North Sea still comes trumps. (discovery of high pressure gas condensate fields) Euroil, 2(3/4), p.8. LI, H. & BERG, C.M.G. VAN DEN 1989 Determination of titanium in sea water using adsorptive cathodic stripping voltammetry. Analytica Chimica Acta, 221, 269-277. LI, Z. & ELLIOTT, A.J. 1990 Tables of monthly surface and bottom temperatures in the U.K. shelf seas. University College of North Wales, Unit for Coastal and Estuarine Studies, Report No.U90-5, 36pp. Licensing: UK ninth round opens up frontier areas. European Offshore Petroleum Newsletter, 10(21), 3-4, 1985. LICK, R.R. 1990 First record of fish intermediate hosts of contracaecum spp. larvae, probably C. osculatum, Rudolphi 1802, an anisakine nematode maturing in pinnipeds, in the German Wadden Sea. International Council for the Exploration of the Sea, Contribution to Statutory Meeting, Marine Mammals Committee, C.M.1990/N:17, 18pp. LICK, R.R. 1989 Stomach nematodes of harbour seal (Phoca vitulina) from the German and Danish Wadden Sea. International Council for the Exploration of the Sea, Contribution to Statutory Meeting, Marine Mammals Committee, C.M.1989/N:7. 22pp. LIDDELL, R.E. & STONE, G.C.H.B. 1990 Use of an electronic imaging system on a major offshore project. pp.637-646 in, OTC 90 Proceedings Vol.2. Richardson, TX: Offshore Technology Conference. 646pp. (OTC 6346) LIDGARD, S. 1990 Growth in encrusting cheilostome bryozoans. II. Circum-Atlantic distribution patterns. Paleobiology, 16(3), 304-321. 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