Environment and quality of life : air pollution of life : air pollution research report 9, tropospheric n°x chemistry-gas phase and multiphase aspects : proceedings of a workshop held at Roskilde, 17-18 september 1987
/ organised by Commission of the European Communities ; ed. by O. J. Nielsen and R.A. Cox
. - Roskilde : Riso National Laboratory , 1988
. - 150 p. ; 23 cm.