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 / Compiled by Charles University.
Material type:![Text](/opac-tmpl/lib/famfamfam/BK.png)
English, Czech, and German.
Includes bibliographies.
Cab. port.: Universitas Carolina Pragensis.
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