Report of the twenty-third session, Czechoslovakia, 1968 general proceedings
Report of the twenty-third session, Czechoslovakia, 1968 general proceedings
general editor: Miroslav Malkovsky ; edited by Arnost Dudek
- Prague Academia 1970
- 227 p. : ill. ; 25 cm.
engger
Geology--Congresses
engger
Geology--Congresses
