1. U.S. Department of Agriculture, Agricultural SiatisticsL 93 (1982).
2. Analytical Methods for Flame Spectroscopy 1979
3. Cadmium and arsenic in your garden? 1982
4. Puget Sound Air Pollution Control Agency, Final environmental impact statement for ASARCO, Inc.: V8 (1981).
5. Point Source Emission Inventory 1980