a (m - a nu
- a (mathematical) model alone, however, is inadequate ...
- a basic approach to the problems of ... is ...
- a certain element of permanence is clearly discernible ...
- a characteristic feature of this group is the possibility of their being used with ...
- a classic example occurs in the world of business when..
- a close reading of N's account, however, will disclose ...
- a considerable amount of experimental work dealing with ... was undertaken by ...
- a contradiction in terms
- a correlation refers to a regular relationship be-tween ...
- a detailed agreement between theory and experiment ...
- a different explanation has been independently offered by ...
- a different interpretation of ... isn’t always obvious..
- a different interpretation on ... is found in ...
- a discreet interest in ... is crucial to ...
- a dramatic improvement in ... is the result of ...
- a fascinating description of ... is given by ...
- a final definition can be reached only when further research has been carried out ...
- a final point can be made concerning ...
- a final remark.
- a good definition of ... is ...
- a great deal of research is being done in ...
- a growth in/ of population has been considerable ...
- a level of difficulty increases in different proportion ...
- a list of the most common ... appears in Appendix C
- a look at the present table of ... gives a clear vision of ...
- a major disappointment along the way was ...
- a major source of data is ...
- a method must be found to ... scale ...
- a method of ... has been developed in ...
- a method to allow the calculation of ... has been proposed ...
- a more modern problem arises from the desire to ...
- a much more complete insight of this phenomenon was gained by ...
- a negligible quantity ...
- a new study carried out at ... found links between ... and ...
- a new technique has been devised ...
- a notable result has been recorded ...
