1. Lapple, C. E., Fallout Control, Stanford Research Institute, SRIA-3 (August 1, 1958).
2. Leventhal, L., Tracerlab, Inc. (personal communication).
3. Crocker, G. R., O'Connor, J. D., and Freiling, E. C., Physical and Radiochemical Properties of Fallout Particles (to be published).
4. Benson, P., Gleit, C. E., and Leventhal, L., “Physical Characteristics of Single Particles from High Yield Air Bursts”, and “Radiochemical Fractionation Characteristics of Single Particles from High Yield Air Bursts”, to be published in Proc. Second USAEC Symp. Radioactive Fallout from Nuclear Weapons Tests.
5. Freiling, E. C., Science, 139, 1058 (1963).