an e - and
- an essential difference between ... is the lack of ...
- an estimate of the total number of ... is found by calculating the difference between ...
- an exception to the rules is ...
- an extensive criticism of ... was made by ...
- an increase occurs when ...
- an increase of ... should be, in principle, beneficial ...
- an increase of ... was constant during the varied tests ...
- an increase of the number of ... is one method which should be, in principle, beneficial ...
- an interesting way of presenting ... is in the form of ...
- an obvious question ...
- an overall picture of ... is shown in Fig 1
- an/ the other trend was to ...
- analytical methods have been developed to predict ...
- analytical treatments have been similarly restricted ...
