ABSTRACT
Imagine that you are working as a library assistant, or as a bookshop assistant, when a client or customer asks whether you have anything on the ‘stegosaurus’. You look on the shelves and, as you might expect, there is nothing specifically on the required subject. Being an efficient assistant, you will check to see if there is anything on ‘dinosaurs’ or perhaps ‘prehistoric animals’ or ‘prehistoric life’, to see if there are any items which contain relevant information. When you carry out a search process in this way, you are making use of classification in that you have identified the superordinate classes to which the required subject belongs.
