21.   For many economists and investors, the monthly payroll report provides an important clue to the rate of economic growth.

22.   His account provides important clues about how to prevent the mentally ill from fleeing state hospitals by the thousands.

23.   Important clues also come from the size of the particles used in the attacks.

24.   In at least one past bombing of an airliner, the seats and the differences in their condition provided important clues to what happened.

25.   Investors anxious to find out if the market is headed for a rout or a rally will get important clues next week.

26.   Nevertheless, knowing which stocks are most popular at the moment can give fund investors important clues about their own portfolios.

27.   Scanning the page, I nearly missed an important clue.

28.   Solving the mysteries of wine-grape parentage also has some practical value, providing some important clues for modern plant breeders trying to create the perfect wine grape.

29.   Southern Maryland officials said no one at the hospital knew he was a postal worker, officials said, an important clue to the possibility of anthrax.

30.   Still, investigators said it could be an important clue.