2003. 2009-07-02T14:22:53Z. 2011-03-28T22:32:45Z. Ȯ̇zhkenov, B. S. Qazaqstan Respublikasynyn︠g︡ ėnergetika zhăne mineraldyq resurstar ministrlīgī, Geologii︠a︡ zhăne zher qoĭnauyn qorghau komiteti. Kazakh&English&Russian. Public. Kazakhstan.
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