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2. Markets and the marketing system in the southern Sierra;Appleby,1980
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4. Brougere, A. M. (1980). Traditions, Changements et Ecologie dans des Communantes Paysannes Andines. These presentee en vue du grade de docteur en ethnologie, Université de Paris.
5. Browman, D. L. (1979). Llama caravan fleteros and the functioning of periodic markets in the Andes. International Geographical Union Working Group on Exchange Systems, 43rd International Congress of Americanists, Vancouver, B.C. 10–15 August 1979.