Summary

The word "document" conjures up to most a medium of past or present information, which could be in the form of a clay tablet of antiquity or a modern encyclopaedia. It is justifiable, therefore, to assume that this dictionary encompasses several wide-ranging subjects. The fields covered are also closely related, a fact which can be attributed to the enormous impact of automation and technology. In clarifying various topics, Mr. Clason has listed specific documents - in itself an unusual approach which will do much to assist operational scientists. The inclusion of an Arabic supplement enhances the value of the dictionary which is an essential tool for libraries, documentation centres and specialists in the field.