Kukersiit ja konnatahvel : meie energia luguBachmann, Marina; Ilp, Reilika; Metusala, Tiit2014 https://www.ester.ee/record=b3068804*est

Kukersite and mudstone : the story of our energyBachmann, Marina; Ilp, Reilika; Metusala, Tiit2014 https://www.ester.ee/record=b3068808*est