21.   Using data from directories, Dr Corfield has shown how urban growth spawned an immense range of specialist jobs.

22.   The technique can be illustrated using data for polyisobutylene at several temperatures.

23.   The technique attempts to separate the data structure from the functions for which the data may be used.

24.   It is not necessary to have different languages for database access and a host language for the complex programming tasks using the data collected.

25.   When A calls B, it sends data of type D to B.

26.   When B terminates, it returns data of type E to A.

27.   Similarly, A communicates with C using data of types E and G.

28.   These data are then used to calculate bond enthalpies.

29.   These figures are similar to the incidence calculated in the west Midlands using independent data.

30.   This report has used further data from the RCGP oral contraception study to examine the influence of smoking and parity on the development of gall stone disease.