au.\*:("SITKO W")
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ECONOMIC CRITERIA OF DEPOSITS EXPLOITATION PROFITABILITY = LES CRITERES ECONOMIQUES DE LA RENTABILITE DES EXPLOITATIONS MINIERESSITKO W; STACHOWICZ J.1979; WORLD MINING CONGRESS. 10/1979/ISTANBUL; TUR; ANKARA: MADEN TETK. ARAMA ENST.; DA. 1979; VOL. 4; 16 P.Conference Paper
