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E (Stack)Sobol, S. L.
"Opticheskie Instrumenty i Svedeniya o Nikh v Dopetrovskoi Rusi" = "Optical Instruments and Information about them in Russia before Peter the Great"
in Akademiya Nauk S.S.S.R. Trudai Instituta Istorii Estestvoznnya 3 (1949), pp. 136-172.
[1966-240]
1949