Dear List There are pakages similar to AERMOD Modeling System* in R? *http://www.epa.gov/scram001/dispersion_prefrec.htm#aermod Best regards Dr. Adrian Martínez Vargas Revista Minería y Geología (Editor Principal) ISMM, Las Coloradas, s/n Moa, Holguín, Cuba CP. 83329 http://www.ismm.edu.cu/revistamg/index.htm