COMPARISON OF THE LOWER ORDOVICIAN TRILOBITE ASSEMBLAGES OF THE NORTHEASTERN U.S.S.R.,SIBERIA AND NORTH AMERICA.CHUGAEVA MN.1966; DOKL. EARTH SCI. SECT.; USA; 1966(9), VOL. 167, P. 34 A 37Miscellaneous

ORDOVICIAN IN THE NORTH-ESTERN U.S.S.R.CHUGAEVA MN.sdIN: ORDOVICIAN SYST. PROC. PALAEONTOL. ASSOC. SYMP.; BIRMINGHAM; 1974; CARDIFF UNIV. WALES PRESS, NATL. MAS. WALES,1976, P. 283 A 292Miscellaneous

THE CAMBRIAN-ORDOVICIAN BOUNDARY IN THE BATYRBAISAI SECTION, MALYI KARATAU RANGE, KAZAKHSTAN, USSR = LA LIMITE CAMBRIEN-ORDOVICIEN DANS LA COUPE BATYRBAISAI, CHAINE PETIT KARATAU, KAZAKHSTAN, URSSCHUGAEVA MN; APOLLONOV MK.1982; THE CAMBRIAN-ORDOVICIAN BOUNDARY: SECTIONS, FOSSIL DISTRIBUTIONS, AND CORRELATIONS; GBR; OXFORD: NATIONAL MUSEUM WALES; DA. 1982; PP. 77-85; BIBL. 1 P.; ILL.Book Chapter

THE CAMBRIAN-ORDOVICIAN BOUNDARY IN THE MALYI KARATAU RANGE, SOUTH KAZAKHSTAN = LA LIMITE CAMBRIEN-ORDOVICIEN DANS LA CHAINE DE MALYI KARATAOU, SUD DU KAZAKHSTANAPOLLONOV MK; CHUGAEVA MN; DUBININA SV et al.1981; OPEN-FILE REP. (U. S. GEOL. SURV. 1978); ISSN 0196-1497; USA; DA. 1981; NO 81-0743; PP. 15-17; BIBL. 15 REF.; ILL.Conference Paper