Toxicology and Poisoning Toxicology and Poisoning Sub Specialty and Esoteric Centers of Excellence Poison Control Phone Numbers Hazardous Substance/Materials Exposure Phone Numbers/Addresses Clinical Information Australian Poisons Information Centres Chemical References Complete Index, Envirofacts Master Chemical Integrator, US EPA EXTOXNET - EXtension TOXicology NETwork - University of California-Davis, Oregon State University, Michigan State University, Cornell University, and the University of Idaho Maryland Poison Center - University of Maryland School of Pharmacy Minimal Risk Levels (MRLs) for Hazardous Substances - ASTDR   Plant Guide - Minnesota Poison Control System  Poisonous Mushrooms and their Edible Look-Alikes - MedNets Top 20 Hazardous Substances for 2001 - ASTDR What to do if someone is poisoned! - Virtual Hospital Where to Find Material Safety Data Sheets on the Internet - Interactive Learning Paradigms Updated 03/12/03