1. 1. Patterson, C. C. & Settle, D. M. SEAREX Newsletter 10, No. 1 (1987). 2. Doe, R. B. Lead Isotopes (Springer, Berlin, 1970). 3. Settle, D. M. & Patterson, C. C. /. geophys. Res. 87, 8857-8869 (1982). 4. Buat-Menard, P., Ezat, U. & Gaudichet, A. Precipitation Scavenging, Dry Deposition and Resuspension Vol. 2, 1259-1270 (Elsevier, New York, 1983). 5. Duce, R. A., Unni, C. K., Ray, B. J., Prospero, J. M. & Merrill, J. T. Science 209,1522-1524 (1980). 6. Merrill, J. T., Bleck, R. & Avila, R. / geophys. Res. 90, 12927-12936 (1985). 7. Buat-Menard, P. in Strategies and Advanced Techniques for Marine Pollution Studies: Mediterranean Sea (eds Giam, C. S. & Dou, H. J. M.) 187-199 (Springer, Berlin, 1986). 8. Pacyna, J. Atmos. Envir. 18, 41-50 (1984). 9. Settle, D. M. & Patterson, C. C. Use of Stable Lead Isotopes as Provenance Indicators for Lead Artifacts in Classic Greek and Roman Cultures (Lecture, National Archeological Museum, Athens, 1972). 10. Russel, R. D. & Farguhar, R. M. Lead Isotopes in Geology (Wiley, New York, 1960). 11. Dulac, K, Buat-Menard, P., Arnold, M., l./at, L.& Martin, D. / geophys. Res. 92, 8437-8453 (1987). 12. Chester, R., Sharpie, E. J., Sanders, G. S. & Saydam, A. C. Atmos. Envir. 18,929-935 (1984). 13. Dulac, F. thesis, Univ. Paris 7 (1986). 14. Elbaz-Poulichet, F., Holliger, P., Huang, W. W. & Martin, J. M. Nature 308,409-414 (1984). 15. Facchetti, S. et al. Isotopic Lead Experiment, 114 pp. (Status Report, Roma, Commission of the Furopean Communities, EPA and ILZO, USA and Societa Italiana Additivi 1982). 16. Flegal, A. R. & Patterson, C. C. Earth planet. Sci. Lett. 64, 19-32 (1983). 17. Veron, A., Lambert, C. E., Isley, A., Linet, P. & Grousset, F. Nature 326, 278-280 (1987). 18. Lorenc, A., Rutherford, I. & Larsen, G. European Centre for Medium-range Weather Forecast Technical Report No. 6 (Reading, 1977). 19. Martin, D., Mithieux, C. & Strauss, B. Atmos. Envir. 21, 41-52 (1987).