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- Fifth conference on clay mineralogy and petrology in Praha : dedicated to the 50th anniversary of the Faculty of natural sciences, Charles University : September 14-15, 1970 / [uspořádal Jiří Konta]. Praha : Universita Karlova, 1972 . 160 s. il.
- Fourth conference on clay mineralogy and petrology in Košice : September 12-14,1967 / [uspořádali J. Konta ...et al.]. Praha : Universita Karlova, 1968 . 145 s. il.