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- [2] Effect of extraction systems on the phenolic composition of virgin olive oils FETT-LIPID, 1999, 101 (09): : 328 - 332
- [10] EFFECT OF CHEMICAL-COMPOSITION OF CRUDE OILS AND METHODS OF REFINING ON QUALITY OF SOUTH-AFRICAN ROAD BITUMENS 5TH CONFERENCE ON ASPHALT PAVEMENTS FOR SOUTHERN AFRICA: PROCEEDINGS, 1989, : G19 - G25