Title: Geokhimii͡a olova i redkikh ėlementov Verkhoi͡ano-Chukotskoĭ skladchatoĭ oblasti
Subjects: Geology, Tin ores, Rare earth metals, Geochemistry
Places: Russia (Federation), Verkhoi͡ansk Range, Northeastern Siberia, Chukotskiĭ nat͡sionalʹnyĭ okrug