History 238 Poisons 151 Trials (Poisoning) 105 Trials (Murder) 102 Law and legislation 100 Toxicology 96 General 95 HISTORY 53 Politics and government 52 Social aspects 48 Medical jurisprudence 45 Medicine 44 History and criticism 41 Hazardous substances 37 SOCIAL SCIENCE 37 Poisoning 35 Pesticides 34 Environmental aspects 33 Prevention 32 Social conditions 32 Gases, Asphyxiating and poisonous 31 POLITICAL SCIENCE 29 Life Sciences 28 MEDICAL 28 Pollution 28 Lead based paint 27 LITERARY CRITICISM 26 Lead 26 history 26 African Americans 25