University of Arizona extension experts say covering plants and small trees with cloth or paper can help prevent frost damage.
VOA: special.2010.01.12
He has also developed special kinds of paper to help people who work in the art and book industries.
VOA: special.2009.10.02
With help from Darwin's friends, the two naturalists presented a joint scientific paper to the Linnean Society of London in July of eighteen fifty-eight.
VOA: special.2009.02.25
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