41.   But, of course, they are also powerful sales tools for publishers and bookstores.

42.   By adding data to this framework, the creators of the NYCMap imagine a powerful tool for the city government.

43.   Celera, he says, has a more accurate sequence and will offer more powerful tools for analyzing that data.

44.   Computer-generated slide shows can be a powerful tool in conveying information to your target audience.

45.   Court-authorized wiretapping is a powerful investigative tool that must be employed with care and due regard for the Constitution.

46.   Criminals may get a powerful new tool for laundering illegal gains.

47.   Deep underground, surrounded by the constant coolness of rock and the sound of seeping water, miners cleave the earth with a powerful tool.

48.   Derivatives, then, are powerful tools for companies to use in the high-stakes balancing act of international financial management.

49.   Designers of all types, with their powerful tools, can and do make everything the market will bear.

50.   Discovery of the two families of pheromone receptor genes in the mouse and rat gives biologists a powerful new tool for tracking down whatever human pheromones may exist.