1. Chemical analysis of ecological materials;Allen,1974
2. On the determination of ecologically significant fractions of some heavy metals in soils;Andersson;Swedish J. Agric. Res.,1976
3. Influence of lime and soil pH on Cd availability to plants;Andersson;Ambio,1974
4. The effect of reeds on the water chemistry of Gnadensee (Bodensee);Banoub;Arch. Hydrobiol.,1975
5. Heavy metals in the sediments of Foundry Cove, Cold Spring, New York;Bower;Environ. Sci. Technol.,1978