Malán, Oldřich. Petrological investigation of dispersed organic matter (MOD) in the deep bore Tobolka 1. Oldřich Malán. In Folia Musei Rerum naturalium Bohemiae Occidentalis: Geologica , Folia Musei Rerum naturalium Bohemiae Occidentalis: Geologica. 56 s. : .Geologica 15