Konta, J. Ninth Conference on Clay Mineralogy and Petrology in Zvolen, August 31 - September 3, 1982 - Prague Univerzita Karlova 1984 - 240 p. ilus. Subjects--Topical Terms: ARCILLASCONFERENCIASMINERALOGIAPETROLOGÍA Subjects--Geographic Terms: CHECOSLOVAQUIA Universal Decimal Class. No.: R/061.3:552.523/C74/9