1. Air pollution across National Boundaries . The impact on the environment of sulphur in air and precipitation . Sweden's case study for the United Nations Conference of the Human Environment (P. A. Norstedt and Soner 710396, Stockholm 1971).
2. Loss of fish populations from unexploited remote lakes in Ontario, Canada as a consequence of atmospheric fallout of acid
3. B. Bua, and E. Snekvik (1972 ). Klekkeforsok med rogn av laksefisk 1966-71. Virkning av surhet og saltinnhold i klekkevannet. [Experiments with the hatching of salmon spawn 1966-71 . F.B.A. Transl. (N.S.) No. 80.] Vann7 , 86 -93 .