It is by federal regulation that each park must be certified.

He failed, as required by regulations, to report the contacts.

An antique, by definition and regulation, is anything made more than 100 years ago.

If they're going by all the rules and regulations, go for it.

But we have had some success at dealing with the problem by taxation and regulation.

A. I think they will get through the things they can do by regulation.

But White House officials said the administration did not have the power to make such a change by regulation.

By regulations, Arkady should have returned the car to the office lot.

However, shuttle bus services are by regulations restricted to students and staff of the university.

By regulations, we shouldn't let her carry it into the base.