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As
originally enacted, the 1976 law prescribed that all visually perceptible
published copies of a work, or published phonorecords of a sound recording,
should bear a proper copyright notice. This applies to such works published
before March 1, 1989. After March 1, 1989, notice of copyright on these works
is optional. Adding the notice, however, is strongly encouraged and, if
litigation involving the copyright occurs, certain advantages exist for
publishing a work with notice.
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