TY - Generic T1 - Lichen Physiology and Air-Pollution .2. Statistical-Analysis of the Correlation between SO2, NO2, NO and O3, and Chlorophyll Content, Net Photosynthesis, Sulfate Uptake and Protein- Synthesis of Parmelia-Sulcata Taylor Y1 - 1990 A1 - Von Arb, C. A1 - Mueller, C. A1 - Ammann, K. A1 - Brunold, C. JF - New Phytologist VL - 115 ER -