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- Pesticides -- Environmental aspects 1
- Pesticides -- Environmental aspects -- South Africa 1
- Petrochemicals 1
- Petrol 1
- Petrol -- Conservation 1
- Petroleum -- Refining 1
- Petroleum -- Refining -- Angola 1
- Petroleum -- Refining -- South Africa 1
- Petroleum as fuel 1
- Petroleum industry and trade -- Angola 1
- Petroleum industry and trade -- Computer networks 1
- Petroleum industry and trade -- Data processing 1
- Petroleum industry and trade -- Information technology 1
- Petroleum industry and trade -- South Africa 2
- Petroleum industry and trade -- South Africa -- Western Cape -- Management 1
- Petroleum industry and trade --Information technology 1
- Petroleum refineries -- Environmental aspects -- Cape Town 1
- Petroleum refineries -- Fires and fire prevention 1
- Petroleum refineries -- Risk assessment 1
- Petroleum waste -- Purification 1