307
307
Гараевская И.А. Петр Пальчинский. С. 149; Graham L. R. Science in Russia and the Soviet Union. P. 162; Fitzpatrick S. The Bolsheviks Dilemma. P. 611.
307
Гараевская И.А. Петр Пальчинский. С. 149; Graham L. R. Science in Russia and the Soviet Union. P. 162; Fitzpatrick S. The Bolsheviks Dilemma. P. 611.