books.google.co.nz - Concerns over the potential ecological effects of fishing have increased with the expansion of fisheries throughout the marine waters of the United States. Effects of Trawling and Dredging on Seafloor Habitat describes how assessment of fishing impacts depends on gear type, number and location of bottom...http://books.google.co.nz/books/about/Effects_of_Trawling_and_Dredging_on_Seaf.html?id=orSv2JlXPykC&utm_source=gb-gplus-shareEffects of Trawling and Dredging on Seafloor Habitat
