Redundant entities

Sometimes I find that I have somehow created multiples of curves or surfaces and when I try to select I get a dozen or more curves to select from, for example. Is there a way to get rid of all the repeats without selecting and deleting them one at a time?

SelDup…they have to be literally copies of the same object, in the same place.

Thanks Jim, I thought that must be it, but I guess I screwed up worse than I thought, because there are like 15 surfaces, but they are each in a slightly different place, or so it seems. I will try to find some other way to select them all and delete them efficiently.