References
- Baumgardner, R., Clark, T. & Stevens, R. 1975. Env. Sci. and Tech. 9, 67.
- Davis, D., Smith, G. & Klauber, G. 1974. Science 186, 733.
- Federal Register 38, No. 110, 15174, June 8, 1973. Galbally, I. 1975. Tellus 27, 67.
- Goldman, M. A. 1975. Tellus 27, 71.
- Junge, C. 1956. Tellus 8, 127.
- Levaggi, D. A., Siu, W. & Feldstein, M. 1973. J. Air Poll. Control Assoc. 23, 30.
- Thompson, J. 1973. EPA, private communication.s