1. T. Kuhn, The Structure of Scientific Revolutions (2nd edition). Chicago: University of Chicago Press, 1970.
2. In this regard we should note that Kuhn himself used the concept of a paradigm in different senses, some more fundamental than others (see Kuhn's 1969 postscript to his original essay, ibid., pp. 174-91).
3. F. Gibberd, Town Design. London: The Architectural Press, 1953.
4. L.B. Keeble, Principles and Practice of Town and Country Planning (4th edition). London: The Estates Gazette, 1969. Two other standard texts of this time which advanced essentially the samedesign-based view of town planning were P. Abercrombie, Town and Country Planning (3rd edition). London: Oxford University Press, 1959 and T. Sharp, Town Planning. Harmondsworth: Penguin, 1940.
5. J.B. McLoughlin, Urban and Regional Planning: a systems approach. London: Faber and Faber, 1969.