1984 2010d-372 accidents accidentvictims bhopal bhopalaccidentalrelease casestudies chemicalindustry citizenparticipation cyanates disasterrelief disasters disastervictims emergencymanagement environmentalaspects environmentalexposure environmentalpolicy gaspoisoning india industrialtoxicology isocyanates methylisocyanate occupational pesticidesindustry poisoning rampen rehabiliatation servicesfor socialresponsibilityofbusiness toxicology wa465s589u2008 wa485e93b1986