1. Bilinski, H., Schindler, P. W., Stumm, W., Zobrist, J., and Vom Wasser, Jb. 43, 107 (1975).
2. Murray, J., and Brewer, P. G., in “Marine Manganese Deposits,” (G. P. Glasby, Ed.), Elsevier, New York, to appear.
3. Schindler, P. W., to appear.
4. Surface Chemistry of Oxides,1971