AIS

Gilchrist, R., Engelstad, E., Øvrevik, S.E., Stead, I.M., Connah, G., Boehmer, R.M., Chesterman, J., Cook, B.F., Krzyzaniak, L. , "Antiquity", Antiquity, vol. 65, issue 248: Oxford University Press, pp. 439-754, 09/1991.
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Krzyzaniak, L., Kobusiewicz, M. , Origin and early development of food-producing cultures in North-Eastern Africa, , Poznan, 1984  .
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