1. An effect of “smog” on stomatal behaviour;Mansfield;Nature,1963
2. Sulphur dioxide concentrations measured at various distances from a modern power station;Martin;Atmospheric Environment,1967
3. Uptake of sulphur dioxide by barley leaves at low sulphur dioxide concentrations;Spedding;Nature,1969
4. The Effects of Air Pollution on Plants and Soil;Webster,1967
5. Effects of sulphur dioxide on vegetation—results of experimental exposure to gas (in German);Zahn;Staub,1961