Preparing, administering, and scoring of professional, knowledge and certification tests; test registration services

A series of books and written articles in the field of politics, public policy, legislation, legislative activities, the legislative process, political issues, lobbying, the environment, global warming, toxicity, toxins, fatigue, exhaustion, hazardous materials, soil, air, water, chemicals, air purification, decontamination of soil, water, and air, air filtration, air pollution, air quality, water purification, water filtration, water pollution, water quality, health, medicine, hospitals, env...