Age of Estonian kukersite oil shale - Middle or Late Ordovician?

statement of authorship
O.Hints, J.Nõlvak, V.Viira
source
journal volume number month
V.24
year of publication
pages
4, p. 527-533 : ill
subject of location
ISSN
0208-189X
notes
Bibliogr.: 21 ref
TTÜ department
language
inglise