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Report a problem related to object: Wpływ równoczesnej obecności Ca, Ni, Bi i Nd lub Mg, Cu, Fe i Pr na intensywność linii spektralnych manganu w łuku prądu zmiennego = Vliânie odnovremennogo prisutstviâ Ca, Ni, Bi i Nd ili Mg, Cu, Fe i Pr na intensivnostʹ spektralʹnyh linij marganca v duge peremennogo toka = The Influence of the simultaneous presence of Ca, Ni, Bi and Nd or Mg, Cu, Fe or Pr on the manganese spectral lines intensity during current arc excitation /