1. Atkins D. H. F. (1972) Personal communication.
2. Duplicate measurements of low concentrations of smoke and sulphur dioxide using two National Survey samplers with a common inlet;Barnes;Atmospheric Environment,1973
3. Sulphur emissions;Barnes;Ecologist,1974
4. The long-distance transportation of smoke and sulphur dioxide in and around the United Kingdom;Barnes,1975
5. Air pollution;Barrett;RIC Rev.,1970