27 February 2012, 15:01
piece about oil trading http://uk.finance.yahoo.com/news/why-oil-is-measured-in barrels.html
sorry, messed up the link! http://uk.finance.yahoo.com/news/why-oil...rrels.html
sorry, messed up the link! http://uk.finance.yahoo.com/news/why-oil...rrels.html