71.   Variations of definitions and standard coding schemes across national boundaries or through time are a particular problem.

72.   Although some of these conditions present no particular problems, it is clear that the air transport market has too many imperfections to work as theory would suggest.

73.   Although Lebanon presents particular problems, there is no hungry army of refugees waiting to march on Israel.

74.   And better communication among the agencies so it can quickly be determined who is responsible for dealing with a particular problem.

75.   Analysts said some of the companies that have performed less well in the market were struggling with particular problems.

76.   And, naturally, particular HMOs face particular problems.

77.   Apple has a particular problem with accurate forecasting, Neff said.

78.   As is so often the case, this particular problem originated in California.

79.   As for the Met, having acknowledged that she will never be a regular there, Ms. Bartoli denies that it presents any particular problem for her voice.

80.   B ook publishers dish out a stream of diet books and health cookbooks targeted at particular problems.