Another controversy concerns the differences between unskilled (simple) and skilled (qualified) labour.

The controversy concerns the question whether this tactical error (the result of sloppy staff work) was remedied in time.

The controversy over the incident concerns the assistance and protection that military forces must afford non-combatants at sea during wartime.

On of Shute's more notorious controversies concerned the assembly's refusal to grant him a regular salary.

A controversy that goes back to the early twentieth century concerns the issue of pure existence theorems.

The controversy concerned the relative merits of French and Italian opera.

The most heated and important controversy will concern AIDS treatment.

A second major controversy concerns the possible width of the wavecut bench.

But the main controversy highlighted in the study concerns the age at which girls are first invited for screening.

A controversy concerns the school's ability to offer interscholastic sports.