Labeling
Plastic bottles are marked at their base with the Resin identification code to indicate the material used:
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Famous quotes containing the word labeling:
“Although adults have a role to play in teaching social skills to children, it is often best that they play it unobtrusively. In particular, adults must guard against embarrassing unskilled children by correcting them too publicly and against labeling children as shy in ways that may lead the children to see themselves in just that way.”
—Zick Rubin (20th century)