Moscow, November 20, 1965 Vice-President of the Academy of Sciences of the USSR MD Millionshchikov congratulates (synchronously) Academician AP Vinogradov on his 70th birthday. Fragments from the speech of Academician A. P. Vinogradov with the report "Isotope equilibria and geological problems" (synchronously). Present: N.M. Zhavoronkov, Sh.A. Azizbekov (Azerbaijan), R.A. Borukaev (Kazakhstan), K.K. Mashrykov (Turkmenistan), Minister of Geology of the USSR A.V. Sidorenko.