au.\*:("VERWOERD WJ")
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GEOCHEMICAL ASPECTS OF FENITISATION AND CARBONATISATION PHENOMENA ASSOCIATED WITH TWO SOUTH AFRICAN CARBONATITE-TYPE VOLCANOES (ABSTRACT).VERWOERD WJ.1968; INTERNAT.SYMPOS.VOLCANOL.SPAIN-CANARY.ISLANDS-SEPT.1968.; 1968Miscellaneous
THE CARBONATITES OF SOUTH AFRICA AND SOUTH WEST AFRICA.VERWOERD WJ.1967; UN.S.AFR.GEOL.SURV.HANDB; ZAF; 1967, NUM. 0006, P. 1 A 452Miscellaneous
SOUTH AFRICAN CARBONATITES AND THEIR PROBABLE MODE OF ORIGIN.VERWOERD WJ.1966; ANN. UNIV. STELLENBOSCH, A; ZAF; 1966, VOL. 41, NUM. 0002, P. 119 A 233Miscellaneous