User needs determine what functions should be provided, and different — Brian Campbell Vickery

"Facet analysis results in more varied, multidimensional relationships, at least in theory, better reflecting the complexity of subject knowledge"

"[Vickery in his handbook of procedures for making , writes that organizing a field into facets] can be achieved only by a detailed examination of the literature of the field"

"The crux of the retrieval problem is that selecting documents to read grows ever more difficult, and new techniques are continually needed."

"Information retrieval is now an accepted part of the new discipline of information science and technology... I have concentrated on the field with which I am most familiar, the problems of bibliographic description and subject analysis."

"Information science is concerned with every aspect of the chain of information transfer activities, but the heart of its interest is information search."

"Citation does not necessarily reflect current demand."