1. Regional Trends;Central Statistics Office (CSO),1993
2. Spatial variability in precipitation chemistry in the urban area of Greater Manchester, U.K.;Conlan,1994
3. Temporal and spatial variability of NO2 in Greater Manchester;Conlan,1994
4. Digest of Energy Statistics;Department of Energy,1988
5. Digest of Environmental Protection and Water Statistics;Department of the Environment,1988