1. Koniag prehistory;Clark,1968
2. Background geochemistry of some rocks, soils, plants, and vegetables in the conterminous United States;Connor,1975
3. The circumvention of the natural biopurification of calcium nutrient pathways by atmospheric inputs of industrial lead;Elias;Geochemica Cosmochimica Acta,1982
4. Inorganic Geochemistry;Henderson,1982
5. Trace Elements in Soils and Plants;Kabata-Pendias,1984