Nuclear family

too, to have generated a class of impractical exercises, if entirely different from those which followed 500 years later. However, this impracticality, characteristic of the school-texts which have survived, disappears when we look at a different family of texts, the accounts from the harsh period known as Ur III, which were the work of practising scribes and administrators. (What kind of texts survive from which period is at least partly chance, depending on the kind of site excavated.) Dating from

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Agriculture and the Origins of the European World Economy in the Sixteen Century, Academic Press, San Diego. Wilson A.G., Rees, P.H., Leigh, C.M. eds., (1977), Models of cities and regions, John Wiley, New York, XXIV, 536 p. Wilson, A. (1971) A Family of Spatial Interaction Models, and Associated Developments, Environment and Planning A, 3, 1-32. Wilson, A. (1981) Disorganized Complexity 1: an Introduction to Entropy Maximising Methods, Chapter 4 in Wilson, A.G. Geography and the Environment

Model on Consumer Categorization Processes », Journal of Marketing, Vol. 46, Spring, pp. 60-72. HASSON Larry (1995), « Monitoring Social Change », Journal of the Market Research Society, Vol. 37, pp. 69-80. HERBST P.G. (1952), « The Measurement of Family Relationships », Human and Relations, Vol. 5, Iss. 1, pp. 3-35. HOWARD John A., SHETH Jagdish N. (1969), The Theory of Buyer Behavior, New York, John Wiley & Sons. JACOBY Jacob, KAPLAN Leon B. (1972), « The Components of Perceived Risk », in VENKATESAN

Model on Consumer Categorization Processes », Journal of Marketing, Vol. 46, Spring, pp. 60-72. HASSON Larry (1995), « Monitoring Social Change », Journal of the Market Research Society, Vol. 37, pp. 69-80. HERBST P.G. (1952), « The Measurement of Family Relationships », Human and Relations, Vol. 5, Iss. 1, pp. 3-35. HOWARD John A., SHETH Jagdish N. (1969), The Theory of Buyer Behavior, New York, John Wiley & Sons. JACOBY Jacob, KAPLAN Leon B. (1972), « The Components of Perceived Risk », in VENKATESAN