They were introduced to service from late 1989 to 1990.

The changes will begin to be introduced from September 2010, although some could happen earlier.

The changes are expected to be introduced from April 2015.

A new system was introduced with effect from the 1st July 2008.

The school introduced a new house system from September 2008.

He used to introduce me as his brother from another mother.

They were introduced from Europe, and have spread all over the country.

The school introduced this course for +2 level students from the academic year 2003-04.

The 121 series sets were introduced from 23 March 1987.

To be introduced on route 327 from 8 June 2013.