Selecting only lines, solids or surfaces?

 From:  rado
Is there a way to select only lines or surfaces with the bounding box?
For example if there are both surfaces and lines in the box that you are dragging, only the lines would be selected.

I'm trying to find an efficient way to clean up my models (getting rid of the curves that were used to loft etc) after they are completed.

I'm pretty bad about removing or hiding them as I go along, and I find that it gets annoying at times... ie I try to select a surface but MoI picks a line instead.

Any suggestions or help would be greatly appreciated.