著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL South Africa. Dept. of Statistics,"Industry groups : motor and other spirits for fuel, lubricating oils and grease ; coke works, bituminous and allied emulsions = Nywerheidsgroepe : petrol en ander motorbrandstof, smeerolie en -ghries ; kookswerke, bitumen en aanverwante emulsies",,[Bureau of Statistics],1966,"Nywerheidsensusse, 1950-51 tot 1960-61 = Industrial censuses, 1950-51 to 1960-61",,,,https://cir.nii.ac.jp/crid/1130282273160828800