A - C
The Acid Precipitation In Ontario Study (APIOS), operated by the Ontario (Canada) Ministry of Environment and Energy, consisted of 18 monitoring sites during the Eulerian Model Evaluation Field Study (EMEFS) from 6/1/1988 to 5/31/1990 in Ontario, Canada. See: "http://src.com/~epriasdc/emefs/apios.htm" for more information on the APIOS. See "http://src.com/~epriasdc/emefs/emefs.htm" for more information on EMEFS.
APIOS