1. User's manual for WATEQ4F, with revised thermodynamic data base and test cases for calculating speciation of major, trace, and redox elements in natural waters;Ball,1991
2. Regional Geochemistry of Wales and West-Central England: Stream Water;BGS,1999
3. Regional Geochemistry of Wales and Part of West-Central England: Stream Sediment and Soil;BGS,2000
4. Frongoch Lead & Zinc Mine. British Mining 30;Bick,1996
5. Evaluation of a method for identification of host physico-chemical phases for trace metals and measurement of their solid-phase partitioning in soil samples by nitric acid extraction and chemometric mixture resolution;Cave;Geochemistry: Exploration, Environment, Analysis,2004