41.   At the end of the day, Jones of the American Chamber of Commerce said, cultural barriers are still the strongest factor limiting foreign car sales.

42.   Back then, there was no barrier between the lanes of the turnpike.

43.   Barriers to entry were high.

44.   Because the barriers can be fuzzy, economists sometimes look at market-share statistics to show that something is wrong.

45.   Because the new barriers will not be continuous, aides to Netanyahu have said they should not be perceived as representing a de facto border.

46.   A final barrier is the rising sophistication of radios.

47.   A Finance Ministry official acknowledged that lifting barriers might not be enough to convince Japanese investors to take the foreign currency risk and invest abroad.

48.   A second barrier is a lingering and misguided skepticism about the safety of nevirapine, especially in the South African government.

49.   A second barrier is a customs duty based on engine displacement.

50.   A vapor barrier with holes is no longer a vapor barrier.