These modifications could not take full effect, however, until a more effective statist model of leadership was created.

Those modifications took only about four hours per helicopter, however, and the fleet was quickly returned to service.

Further modifications took place in the 17th and 18th centuries.

The modifications could cost an additional $15 million and take at least two years to complete.

The repairs and modifications took nearly a year to complete.

But just how does legitimate modification of church teachings take place?

Various modifications took place over the years and a Dutch barn was built in 1949.

On May 7, 1940 further modifications to the system took place.

Not many major modifications took place after that until the year 2000, when a new band area was established.

Several expansions and modifications have taken place over the years.