Developing Toxicity Scores for Embryotoxicity Tests on Elutriates with the Sea Urchin Paracentrotus lividus, the Oyster Crassostrea gigas, and the Mussel Mytilus galloprovincialis - Losso, Chiara; Picone, Marco; Novelli, Alessandra Arizzi; Delaney, Eugenia; Ghetti, Pier Francesco; Ghirardini, Annamaria Volpi (Archives of Environmental Contamination and Toxicology, 2007)