Krogh L. Acidic precipitation: proceedings of the International Symposium on Acidic Precipitation, Muskoka, Ontario, September 15-20, Ed. by Hans C. Martin. (Water, air, and soil vol. 30-31. gt [Internet]. 1. januar 1990 [henvist 18. april 2024];90. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/44816