ON THE RELATION BETWEEN THE ORDOVICIAN BRACHIOPOD FAUNAS OF NORTHERN ESTONIA,SCANDINAVIA,BOHEMIA,BRITAIN AND NORTH AMERICA.ROOMUSOKS A.1968; INT.GEOL.CONG.REPORT.OF.THE.23.SESSION-CZECHOSLOVAKIA-1968; 1968, VOL. 9, P. 21 A 29Miscellaneous

STRATIGRAPHIC BREAKS IN THE ORDOVICIAN OF NORTHERN ESTONIA AND THE CORRESPONDING CHANGES IN THE FAUNAROOMUSOKS A.sdIN : 24E CONGR. GEOL. INT. MONTREAL, 1972; OTTAWA 24E CONGR. GEOL. INT. ,1972, VOL. 7, P. 605 A 611Miscellaneous

STRATIGRAPHIC BREAKS IN THE ORDOVICIAN OF NORTHERN ESTONIA AND THE CORRESPONDING CHANGES IN THE FAUNAROOMUSOKS A.sdIN : 24E CONGR. GEOL. INT. MONTREAL, 1972; OTTAWA 24E CONGR. GEOL. INT. ,1972, VOL. 7, P. 605 A 611Miscellaneous