Time and resource requirements will no doubt be substantial, but this should be a major topic of discussion with relevance to not only PAHs but other large classes of chemical compounds that largely remain untested for toxicity.
Troop 137 has become part of an emerging national trend of large classes of young men gaining scouting's elite rank.
In some countries "monitors" still receive short courses of training as their preparation to teach large classes of young children.
By contrast, trade between countries at very different levels of economic development tends to create large classes of losers as well as winners.
"This back and forth between regular and irregular states," the report notes, "reflects the reality that vulnerability-reducing regulations may not reach large classes of housing, nor will be effective long-term without continued enforcement".
The G.M. and Ford announcements are the first instances of big domestic automakers committing themselves voluntarily to significant increases in the average fuel economy of large classes of vehicles.
The other large classes of people who qualify — firefighters, police officers, contractors, city workers, residents and students — have it relatively simple, since they are more likely to have official work orders, attendance records and leases to back them up.
"We don't actually know how the Internet's going to work 10 years from now, so it's kind of, I think, a mistake to start carving out large classes of things that you don't really understand yet," Mr. Page said.
Most Vioxx users were elderly.The many consumer-protection lawsuits could be more costly, especially if plaintiff lawyers put together large classes of Vioxx patients all wanting their money back.
Generalized modeling for conceptual analysis of large classes of models.
Large classes of stochastic systems of interest to acoustics and vibrations have time delays.
