These changes are important, but other parts of the law also need revision.

As new evidence is presented, any idea may need revision.

In 1990, it became clear that the 1984 guidelines needed revision.

But a new study suggests that this advice may need revision.

As a result, some provisions of the tax system need revision, the experts said, either in the very near future or within a few years.

Copyright laws need huge revision when it comes to music.

Air Force officers said the study has not needed revision and is operative today.

When our experiments stop making sense we should go back to these assumptions to see whether they need revision.

Now, at the very least, his timetable would need serious revisions.

Officials and public interest advocates are divided over whether the laws need revision.