51.   Not until late in his year of study at Stanford did a fellow student identify the source of his malaise.

52.   On the broadcast, the source was identified as a former manager for another cigarette manufacturer, R.J. Reynolds Tobacco Co., a subsidiary of RJR Nabisco Holdings Corp.

53.   Officials have not identified the source of the letters.

54.   Radios crackled with urgent efforts to identify the source of the fire.

55.   Since trainer Ron Medlin and the Atlanta medical staff identified the source of his back problems after an MRI, Nagle has thrown the ball much better.

56.   So we identify the source or go to the application.

57.   Since the start of the anthrax attacks, federal officials, scientists and amateur sleuths have scrambled to identify the source.

58.   So far it has killed four people, sickened several others and baffled investigators who are trying to contain exposure and identify the sources.

59.   Still, reporters took Van den Bossche to task for lifting the restrictions before clearly identifying the source of the illnesses.

60.   The agency, without identifying its sources, said she was in intensive care at the Pitie-Salpetriere Hospital in southeast Paris.