Lead in gasoline blunted IQ of half the U.S. population, study says
Lead in gasoline blunted IQ of half the U.S. population, study says
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Lead from gasoline blunted the IQ of about half the U.S. population, study says
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Lead in gasoline blunted IQ of half the U.S. population, study says
Lead from gasoline blunted the IQ of about half the U.S. population, study says