41.  Of particular concern is the growing use of Ritalin as a recreational stimulant by college students and fast-track professionals.

42.  One important change in the last few years is the growing use of the Internet for reference works.

43.  One of the management practices we were fighting was the growing use of part-time, nonunion reporters to cover stories in the suburbs.

44.  Others blame increasing air pollution and urbanization, or the growing use of carpeting that collects dust and other allergens.

45.  Scientists speculate that with the growing use of day care, more youngsters get lice because they have more contact with other children at earlier ages.

46.  Smith said he drafted the measure in response to repeated concerns from constituents over the safety issues posed by the growing use of wireless telephones in vehicles.

47.  So does the growing use of one-time bonuses in lieu of raises.

48.  The airstrikes also testified to the growing use of Special Forces on the ground.

49.  The company blamed competition from high-speed rail, as well as the growing use of European low-fare carriers, which generate less revenue for airports.

50.  The growing use of temporary workers helps in this process.