GEOLOGIC REFERENCE SOURCES. A DECADE OR PROGRESS.HARVEY AP.1980; COLLECTION DEVELOPMENT IN GEOSCIENCE LIBRARIES GEOSCIENCE INFORMATION SOCIETY. MEETING. 14/1979/SAN DIEGO CA; USA; S.L.: GEOSCIENCE INFORMATION SOCIETY; DA. 1980; PP. 85-93; BIBL. 15 REF.Conference Paper

URICONIAN AND LONGMYNDIAN: A HISTORY OF THE STUDY OF THE PRECAMBRIAN ROCKS OF THE WELSH BORDERLAND = URICONIEN ET LONGMYNDIEN: L'HISTOIRE DES ROCHES PRECAMBRIENNES DE LA BORDURE GALLOISESARJEANT WAS; HARVEY AP.1979; GEOL. ASSOC. CAN. SPEC. PAP.; ISSN 548049; CAN; DA. 1979; NO 19; PP. 181-224; ABS. FRE; BIBL. 4 P.; ILL./PORTRAITConference Paper