Commission Regulation (EC) No 1491/1999 of 7 July 1999 correcting Regulations (EC) No 2706/98, (EC) No 2711/98, (EC) No 2725/98, (EC) No 2745/98, (EC) No 2766/98, (EC) No 2781/98 and (EC) No 2803/98 establishing the standard import values for determining the entry price of certain fruit and vegetables