21.   This cover technique is used by multinational corporations.

22.   This makes these techniques difficult to use as reliable absolute dating methods.

23.   This technique has been used for uranium, copper, fluorine and other relatively soluble elements.

24.   This technique is used to create images of beautiful forests.

25.   Using techniques such as discriminant analysis and cluster analysis, a model is being developed which represents the occupational structure for women.

26.   We feel it is worth noting how this particular problem was solved, using techniques to reduce the error after convergence.

27.   Where money rather than people is the primary concern, financial modelling techniques can be used.

28.   With detergents and other chemicals a different technique is used.