This paper presents a defi nition of Mikuszowice chert. Fourteen types of Mikuszowice chert have been identifi ed. These results are useful for identifying fl int artifacts in the Outer Carpathians. Mikuszowice chert artifacts have been identifi ed in inventories dated to different time periods from the Upper Paleolithic to Early/Older Bronze Age. At present, 39 sites with Mikuszowice chert are known. The most important of these sites is a complex of 8 sites in Jaworze. The chert artifacts occur within 100 km of their source. The chert was collected during surface surveys or in primary and secondary deposits., Eugeniusz Foltyn, Leonard Jochemczyk., and Obsahuje pouzitou literaturu
Transformations of Czech-Language Plainchant in the Sixteenth Century: An Attempt at a Classification of Its "Editions" Using the Example of the Alleluia for the Feast of the Assumption of the Virgin Mary.
Klasifikace eukaryot měla v historii mnoho podob, které vždy odrážely soudobý stav poznání. Článek představuje hlavní etapy a milníky jejího vývoje, včetně aktuálního konceptu eukaryotických superskupin. S ohledem na význam článku jsou diskutovány možnosti jeho začlenění do výuky biologie na středních školách., Historically, there were several classification schemes of eukaryotes, always reflecting the contemporary state of knowledge. The article presents the major stages and milestones in its development, including the current concept of eukaryotic supergroups. Considering its significance, the possible implementation of this approach in secondary school biology courses is discussed., and Tomáš Macháček, Kateřina Mikešová, Libuše Turjanicová, Vladimír Hampl.