On May 20, the National Academy of Sciences and the Academy of Sciences of the USSR jointly announced the signing of a new two‐year agreement for the exchange of visits by United States and Soviet scientists. An annex to the general agreement on cultural exchanges between the two countries, the new agreement on scientific exchanges is the third since 1959 between the US and Soviet academies. It was signed by their presidents, Frederick Seitz and M. V. Keldysh.

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