PRECAMBRIAN IGNIMBRITES AND ASSOCIATED VOLCANICLASTICS FROM THE HERBERT DISTRICT, NORTHERN CAPE PROVINCE.POTGIETER CD; VISSER JNJ.1976; TRANS. GEOL. SOC. S. AFR.; S. AFR.; DA. 1976; VOL. 79; NO 1; PP. 27-30; BIBL. 12 REF.; 5 ILL.Article

PRECAMBRIAN IGNIMBRITES AND ASSOCIATED VOLCANICLASTICS FROM THE HERBERT DISTRICT, NORTHERN CAPE PROVINCE. DISCUSSION.LOCK BE; POTGIETER CD; VISSER JNJ et al.1977; TRANS. GEOL. SOC. S. AFR.; S. AFR.; DA. 1977; VOL. 80; NO 1; PP. 47-48; BIBL. 24 REF.Article

DIE AFSETTING VAN RESENTE SANDE IN DIE GEBIED TUSSEN DIE RIET- EN ORANJERIVIER, NOORD-KAAPLAND = PRESENCE DE SABLES RECENTS DANS LA REGION DU CONFLUENT VAAL RIVER-ORANGE RIVER, NORD DE LA PROVINCE DU CAPVISSER JNJ; POTGIETER CD; MCLAREN CH et al.1975; ANN. GEOL. OPNAME; ZAF; DA. 1975-1976; VOL. 11; PP. 147-161; H.T. 2; ABS. ENG; BIBL. 1 P.; 10 ILL.Article

THE VENTERSDORP GROUP BETWEEN TAUNG AND BRITSTOWN, NORTHERN CAPE PROVINCEVISSER JNJ; GROBLER NJ; JOUBERT CW et al.1975; ANN. GEOL. OPNAME; ZAF; DA. 1975-1976; VOL. 11; PP. 15-28; H.T. 1; BIBL. 1 P.; 4 ILL.Article

DIE SERIEE SWARTRIF EN DOLOMIET VAN DIE SISTEEEM TRANSVAAL IN NOORD-KAAPLAND = LES BLACK REEF ET DOLOMITE SERIES DU SYSTEME DU TRANSVAAL DANS LE NORD DU CAPVISSER JNJ; GROBLER NJ; VAN DER MERWE J et al.1975; ANN. GEOL. OPNAME; ZAF; DA. 1975-1976; VOL. 11; PP. 77-93; H.T. 5; ABS. ENG; BIBL. 1 P.; 5 ILL.Article

THE DWYKA FORMATION AND ECCA GROUP, KAROO SEQUENCE, IN THE NORTHERN KAROO BASIN, KIMBERLEY-BRITSTOWN AREAVISSER JNJ; LOOCK JC; VAN DER MERWE J et al.1977; ANN. GEOL. OPNAME; ZAF; DA. 1977-1978; VOL. 12; PP. 143-176Article