TY  - BOOK
AU  - Malkovsky, Miroslav
AU  - Vachtl, Josef
AU  - Hejtman, Bohuslav
AU  - Masin, Jan
TI  - International Geological Congress: Report of the Twenty-third Session Czechoslovakia 1968
U1  - 551 
PY  - 1969///
CY  - Prague
PB  - Academia
KW  - IGC- Report
ER  -