41.   This literature, however, presents considerable problems for the historian.

42.   The preservation of such data by the PRO presents technical problems of preservation and storage which will necessitate it intervening much sooner after data is created in departments.

43.   The origin of such an organised body presents problems, as the short discussion of types of interlaced square arrangement intimates.

44.   Disposal of the Trabants has presented problems since the chassis is constructed of synthetic resin and Soviet cotton wool waste, which break down into low-level toxic materials.

45.   The drafting of an indexation clause presents various problems.

46.   The problem is presented to them, and then they think about it for a minute, and then they say anything that comes into their head.

47.   Components for use in a.c. bridges present problems.

48.   Although the center takes some of the most difficult cases in the world, Marler knew Sam Lightner presented major problems.

49.   Although arson is one of the most terrifying of crimes, detection and prosecution is difficult, and prosecutors say violence cases present problems in finding motives and witnesses.

50.   Although Lebanon presents particular problems, there is no hungry army of refugees waiting to march on Israel.