Source: Classification and indexing in science (1958), Chapter 1: The need for classification, p. 12-13.
“The scope of a specialised documentary classification is usually designated by its title, the subject field that it professes to classify. It is no easy task to state what is meant by a subject field. In general it can be expressed as Thing-Activity. A definable group of things… is selected, and from the many relations in which they subsist a certain number are selected as relevant.”
Source: Classification and indexing in science (1958), Chapter 1: The need for classification, p. 11.
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Brian Campbell Vickery 84
British information theorist 1918–2009Related quotes
Source: Classification and indexing in science (1958), Chapter 1: The need for classification, p. 8; Partly cited in Nigerian Library and Information Science Review (1987). Vol 5-8. p. 44.

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Source: The Number-System of Algebra, (1890), p. 3; Reported in Robert Edouard Moritz. Memorabilia mathematica; or, The philomath's quotation-book https://archive.org/stream/memorabiliamathe00moriiala#page/81/mode/2up, (1914), p. 263
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Source: Classification and indexing in science (1958), Chapter 1: The need for classification, p. 3.
Foskett Classification and indexing in Science, p. 42; As cited in: Eric de Grolier (1962) A study of general categories applicable to classification and coding in documentation http://unesdoc.unesco.org/images/0002/000250/025055eo.pdf. p. 15

Chachnama, Kalichbeg, in Lal, K. S. (1994). Muslim slave system in medieval India. New Delhi: Aditya Prakashan. Chapter 10
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