TY  - SER
AU  - Hayward,Tony
TI  - Back to petroleum
PY  - 2007///
CY  - 
PB  - 
N2  - Transcripción del resumen del autor. The last two years have been rough for BP, its employees and its shareholders, writes Derek Brower. Can its new leader, Tony Hayward, turn the company around?
ER  -