The maps are subject to ongoing revision, about 60 maps are issued in new release each year.

Moreover, in the field of composition studies, students are being encouraged more and more to do group work and participate in ongoing collective revision.

Nor do the ongoing revisions of the Soviet Constitution.

An encounter like that represents the more visible side of Williamsburg's ongoing revision, compared with the quieter fine-tuning of its buildings and gardens.

Gondzia also used the visit to highlight the ongoing revision of the voter rolls in preparation for the 2009 presidential election.

Like many protist species and genera this genus is subject to ongoing revision especially in the light of DNA based taxonomy.

The number and names of these species may soon change as a result of an ongoing revision of the genus by taxonomists.

Back-tested to December 1979 using the same methodology employed for ongoing revisions and calculations.

Moreover, the requirement that guidelines need ongoing revision in the light of changed circumstances must not be forgotten.

Note that this sequence might not be considered definitive due to ongoing revisions and refinements.