1. Abell, P. I., Draffan, G. H., Eglinton, G., Hayes, J. M., Maxwell, J. R., and Pillinger, C. T.: 1970a,Science 167, 757.
2. Abell, P. I., Draffan, G. H., Eglinton, G., Hayes, J. M., Maxwell, J. R., and Pillinger, C. T.: 1970b,Proc. Apollo 11 Lunar Sci. Conf., Geochim, Cosmochim. Acta Suppl. 1,2, 1757.
3. Abell, P. I., Eglinton, G., Maxwell, J. R., Pillinger, C. T., and Hayes, J. M.: 1970c,Nature 226, 251.
4. Abell, P. I., Cadogan, P. H., Eglinton, G., Maxwell, J. R., and Pillinger, C. T.: 1971Proc. Apollo 12 Lunar Sci. Conf., Geochim. Cosmochim. Acta Suppl. 2,2, 1843.
5. Albone, E. S., Eglinton, G., Evans, N. C., and Hunter, J. M.: 1972,Environmental Science and technology (in press).