51.   State officials say there is no evidence of unusually high cancer rates around the site to justify a comprehensive study.

52.   The Air Force is fighting a sweeping lawsuit that would halt low-level training flights nationwide until a comprehensive study could be done on their impact.

53.   The author of the only comprehensive study on the issue to date has reached a controversial conclusion that concealed-carry laws translate into less crime.

54.   The authors billed the report, which was released yesterday, as the first comprehensive study of farmworker health ever done in California.

55.   The Arizona Lottery recently scrapped a plan to commission a comprehensive statewide study of the problem.

56.   The agency is expected to release this summer the results of its comprehensive study of the causes and effects of the Ames case.

57.   The bureau has yet to do a comprehensive study on why Hispanics have fared so poorly.

58.   The authors said they believed it was the most comprehensive study of whiplash ever done.

59.   The commissions agreed to use findings from the comprehensive study as a basis for negotiations, which began in February.

60.   The federal department of education is paying for a more comprehensive study of the effects of the strategy.