1. Abu-Erreish, G. M., Whitehead, E. I., and Olson, O. E., 1968, Evolution of volatile selenium from soils, Soil Sci. 106:415–420.
2. Alexander, M., 1973, Microorganisms and chemical pollution, Bioscience 23:509–515.
3. Allaway, W. H., 1968, Agronomic controls over the environmental cycling of trace elements, in: Advances in Agronomy (A. G. Norman, ed.), Vol. 20, pp. 235–274, Academic Press, New York.
4. Allaway, W. H., 1973, Selenium in the food chain, Cornell Vet. 63:151–170.
5. Andren, A. W., Klein, D. H., and Talmi, Y., 1975, Selenium in coal-fired steam plant emissions, Environ. Sci. Tech. 9:856–858.