References:

1. John McHale, “The Changing Information Environment: A Selective Topography,” in Information Technology: Some Critical Implications for Decision Makers (New York: Conference Board, Inc., 1972) p. 187.

2. Mary L. Knobbe, ed., Planning and Urban Affairs Library Manual, 3rd ed., prepared for the Council of Planning Librarians (Washington: International City Management Association, 1975), p. 1.

3. Ibid, p. 28.

4. Roger Boldt and Gerald Charpar, Thesaurus Used in the Program in Urban and Regional Planning University of Iowa (Monticello, IL: Council of Planning Librarians, 1971); International City Management Association, “I.C.M.A. Subject Descriptor List,” in Planning and Urban Affairs Library Manual, op. cit., pp. 47-107.

5. Robert W. Ditmer, A Thesaurus of Planning Terms (Monticello, IL: Council of Planning Librarians, 1976); Glenda M. Alvin,  A Thesaurus of Planning Terms from the Atlanta Regional Commission Library (Monticello, IL: Council of Planning Librarians, 1978); Robert W. Ditmer, The Language of Planning: A Thesaurus of Subject Headings (Prepared for the RSWA Planning Library and the American Society of Landscape Architects, 1980).