Title: Dokladʺ Sovi︠e︡ta Sʺi︠e︡zda Ėkstrennomu sʺi︠e︡zdu gornopromyshlennikovʺ i︠u︡ga Rossīi (maĭ 1907 goda) po 3-mu voprosu programmy
Subjects: Mines and mineral resources
Places: Russia