The Chemical Composition of the Esthonian M.-Ordovician oil-bearing mineral "kukersite"Kogerman, P.NEesti Vabariigi Tartu Ülikooli Toimetused. A, Mathematica, physica, medica. 31922 / 25 lk

The chemical composition of the Esthonian M.-Ordovician oil-bearing mineral "Kukersite"Kogerman, Paul1922 http://dspace.ut.ee/handle/10062/55657 https://www.ester.ee/record=b3077257*est