The July 1989 issue of the popular science “Priroda” journal containing the round table discussions following the 100^th Alexander Friedman anniversary conference held in Leningrad in 1988.

The participants in the round table are: Remo Ruffini, Humitaka Sato, Michael Turner, Marek Demianski, Moisei Markov, Andrei Sakharov, Igor Novikov, Stanley Deser, Brandon Carter, Stephen Hawking and Andrei Linde.

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