11.   The COB Rules introduce the concept of an indirect customer.

12.   It also introduces the concept of parental responsibility, amends the law of guardianship and makes provision for welfare reports in proceedings under the Act.

13.   And for the environmentalists, the administration is introducing new concepts for promoting biodiversity by protecting whole habitats rather than individual species.

14.   As each new concept is introduced, a tutorial explains the method of calculation.

15.   As a result, when the concept of time zones was introduced, the starting point for calculating the different zones was at the Royal Greenwich Observatory.

16.   After she introduced the concept of museum memberships, two other Athens museums followed suit.

17.   Burke Marshall, former assistant attorney general, defended affirmative action, crediting JFK for introducing the concept.

18.   But as the government tab began to grow, somebody introduced the concept of a withholding tax, as a service to the public.

19.   Chinese checkers introduces the concept of competition.

20.   Cosell is given credit for introducing the concepts of journalism into sports broadcasting.