Union of Soviet Socialist Republics (Continued) maturity, harmful disturbances have been found in young animals even two years after exposure. G/R.208 THE CYTOGENETIC EFFECTS OF RADIATION EXPOSURE ON SPERMATOGENESIS IN MONKEYS ; Presents the results of cytological analysis of monkey testes two years after exposure to a dose of 150-450 r. Extensive damage to the spermatogenesis was found. The frequency of chromosome rearrangements in mammals considerably exceeds that in Drosophila after exposure to the same dose, being 65% and 1.6% after 500 r respectively. Union of South Africa G/R.6 PRELIMINARY REPORT ON RADIOACTIVE FALLOUT The preliminary result of the measurement of total 6 activity of fallout by porcelain dish method is described and results are given for January —June 1956. Sr® deposition was estimated by chemical analysis. United Arab Republic G/R.191 RADIOACTIVE FALLOUT IN EGYPT: DECEMBER, 1956-FEBRUARY 1957 G/R.192 RADIOACTIVE FALLOUT IN EGYPT: MARCH —-DECEMBER 1957 G/R.193 SOME SOMATIC CHANGES OBSERVED IN CULEX MOLESTUS FORSKAL 1775 Shows differences in the uptake of p*®? in dependence upon the development stage and sex. The explanation of sex-difference is discussed. UNESCO/FAO/WHO G/R.162 UNESCO/FAO/WHO REPORT ON SEA AND OCEAN DISPOSAL OF RADIOACTIVE WASTES, INCLUDING APPENDICES A, B, AND C Summarizes contributions made by different authorities. Appendix A. R. Revelle and M. B. Schaefer. General considerations concerning the ocean as a receptacle for artificially radioactive materials. Contains general account of the processes in the oceans and indicates the necessity of research on certain basic problems which would enable prediction of the consequences of the disposal of large quantities of radioactive material at sea. Recommends measures of an international character in order to assure safe liquidation of atomic wastes. Appendix B. Report prepared by FAO and WHO. Discusses the questions: 1. The geochemical cycle of various elements between the water and the sediments. 2. The affinities of the various species of organisms in the oceansfor different elements which have radioactive isotopes. 3. The possible rate and distance of vertical and horizontal transport of radioactive isotopes by marine organisms. 4. The distribution, abundance, and rate of growth of the populations in the oceans. Appendix C. Abstracts of eight other contributions to the report on sea and ocean disposal of radioactive wastes. 194