Trace fossils on and above the transgressive surface: substrate consistency and phosphogenesis (Lower Ordovician, St Petersburg region, Russia)

by Ershova, Victoria B., Fedorov, Peter V., Mikuláš, Radek
Source: 1. Geologica carpathica 1. 1335-0552 1. Roč. 57, č. 5 (2005), s. 415-422

Theoretical applied guestions and their implementation in development of hierarchical computer control systems (CNC) of facsimile copy copy machines for art engraving on minerals

by Morozov, V.I, Fedorov, S.V, Mikov, I.N
Source: 1. Acta Montanistica Slovaca 1. 1335-1788 1. Roč. 7, č. 3(2002), s. 195-198