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by Plekhanov, Georgiĭ Valentinovich
Book 354 p. Budapest : Szikra, 1950

Available in the Research Room

Book 479 p. [Budapest] : Kossuth, 1966

Available in the Research Room

Book 878 p. [Budapest] : Kossuth, 1962

Available in the Research Room

4. Isaac Newton [1948]
by Vavilov, S.I.
Book 259 p. Budapest : Szikra, 1948

Available in the Research Room