1. Petroleum Pollution in the Caribbean;Atwood;Oceanus,1988
2. Preliminary studies of man-made litter in the Firth of Forth, Scotland;Caulton;Mar. Pollut. Bull.,1987
3. Centre for Marine Conservation. 1989 Beach Cleanup Report—Puerto Rico;CMC,1989
4. Tar Ball Survey of Six Caribbean Islands;Corbin,1992
5. Pilot survey of coastal pollution by persistent synthetic materials in selected Mediterranean areas;IOC/FAO/UNEP,1989