41.   The delay is a result of the first major challenge to the federal salvage-timber legislation.

42.   The environment poses another major challenge to reliance on the car industry.

43.   The formal challenge to Lewontin and Huxley must be based on mathematical argument but the general biological points are as follows.

44.   The initial founding of a squatter settlement is, itself, an illegal act and, therefore, a challenge to authority.

45.   The management of Disinfection Disinfection in normal practice presents a challenge to management.

46.   The material being taught must pose a challenge to pupils.

47.   The paper claims this represents a serious challenge to other Risc vendors jostling for position in the software arena.

48.   The region has posed an administrative challenge to local governments for years.

49.   The strike was a challenge to constitutional government.