61.   The government should wait for the results of a comprehensive study being done by the National Academy of Sciences.

62.   The Justice Department said Wednesday that it would undertake a comprehensive study of the federal death penalty to determine whether the system is racially or ethnically biased.

63.   The looming loss of billions of dollars in health care revenues would have made a comprehensive study impossible, she said.

64.   The new research, the most comprehensive study yet of adolescents, shows that most teenagers are doing well.

65.   The most comprehensive study yet of levels of potentially harmful substances in Americans has some encouraging findings and some surprising ones.

66.   The new Commonworks plan has been planned for more than a year, but there has never been a comprehensive study of the old system.

67.   The problem is believed to be so prevalent that the American Bar Association is planning a comprehensive study of the impact of high loan debt on public interest law.

68.   The report is the first comprehensive national study on child-care subsidies.

69.   The report card, to be released today, is billed as the most comprehensive study to date of city operations and performance.

70.   The supporters of casino gambling praised the report as the most comprehensive study to date on the potential benefits of casinos.