Little or no theoretical work occurred until the 19th century.

But I was given a large volume of his theoretical work.

Finally, there is a small amount of theoretical or academic work.

There was much to be said for practical instead of theoretical work.

The exceptions are theoretical work, for which a media project is required.

More recent theoretical work shows that this is not always necessarily the case.

But it had never quite satisfied him, not in the way that his theoretical work did.

The development for this control concept took three years of theoretical work and testing.

His scientific studies have included both experimental and theoretical work.

But you'll need to do a lot more theoretical work on it.