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O'Connor, Tom, Vol-11/8 (Aug): 41

O'Halloran, Frank, Vol-11/8 (Aug): 28, 55; Vol-11/11 (Nov): 36

oil/gas companies, Vol-11/2 (Feb): 16-20; Vol-11/10 (Oct): 23-6

on-line opinion, Vol-11/11 (Nov): 79

Orica, Vol-11/5 (May): 33

Origin Energy, Vol-11/5 (May): 27, 33

Overall, Kim, Vol-11/2 (Feb): 36, 39