when did they stop using lead in pencils
Pencil Although lead has not been used for writing since antiquity, lead poisoning from pencils was not uncommon. Until the middle of the 20th century the paint used for the outer coating could contain high concentrations of lead, and this could be ingested when the pencil was sucked or chewed.[42]
Paris Peace Accords
If I Had My Life to Live Over The song is now a recognized standard, recorded by many artists.
Computerized Criminal History Computerized Criminal History
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.
Noise pollution Up until the 1970s governments tended to view noise as a "nuisance" rather than an environmental problem.