1. USPHS;Federal Regist.,1962
2. See www.house.gov/science/ets/oct04/ets_charter_100401.htm.
3. EPA;Federal Regist,2001
4. NRC Arsenic in Drinking Water 2001 Update (National Academy Press Washington DC 2001).
5. Neubauer O., Br. J. Cancer1, 192 (1947).