A delayed effect of ozone fumigation on photosynthesis of Norway spruce D. Eamus, J. D. Barnes, L. Mortensen, H. Ro-Poulsen and A. W. DavisonAnn. For. Sci., 46 Supplement (1989) 568s-572sDOI: https://doi.org/10.1051/forest:198905ART0129