51.   It replaces a system that relied on voluntary reporting.

52.   It also got both sides to agree to draft a new constitution to replace a system of government that is paralyzed by racial politics.

53.   It would also replace the system of temporary courts set up to try cases of war crimes and genocide in the former Yugoslavia and Rwanda.

54.   New instrumentation was installed and the fuel system was replaced to eliminate risk of fire.

55.   The bewildering federal income tax system should be replaced with something simpler and far less burdensome, a coalition of interest groups and two senior House Republicans said Thursday.

56.   The commission proposes to replace that system with production licenses, which, unlike quotas, could not be rented out to other farmers.

57.   The county then began a six-month project to upgrade and replace older systems.

58.   The State Department is using it on nearly half its most important computers, but also plans to replace those systems within five years.

59.   There will be one membership system, replacing individual systems in each voting district, and all members will be able to vote for the party leader.

60.   This system has been replaced by a surface high pressure system and dry air.