Georgiĭ Vitolʹdovich Voĭtkevich

• Geokhimii︠a︡ i kosmokhimii︠a︡ izotopov
• Geologicheskai︠a︡ khronologii︠a︡ Zemli
• Poleznye iskopaemye i metallogenii︠a︡ i dokembrii︠a︡
• Rolʹ organicheskogo veshchestva v kont︠s︡entrat︠s︡ii metallov v zemnoĭ kore