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| 1 | Owen, D.I., Neo-Sumerian Archival Texts Primarily from Nippur in the University Museum, the Oriental Institute and the Iraq Museum, Winona Lake 1982 |
| 2 | Civil, M., The Farmer's Instructions. A Sumerian Agricultural Manual, Aula Orientalis - Supplementa 5, Sabadell 1994 |
| 3 | Garfinkle, S.J., Entrepreneurs and Enterprise in Early Mesopotamia. A Study of Three Archives from the Third Dynasty of Ur, Cornell University Studies in Assyriology and Sumerology 22, Bethesda 2012 |
| 4 | Cripps, E.L., "The Structure of Prices in the Neo-Sumerian Economy (I); Barley: Silver Price Ratios", Cuneiform Digital Library Journal 2017: 2, 44 pp. |
| http://cdli.earth/P121079 |
| http://www.penn.museum/collections/object.php?irn=395181 |
| http://oracc.museum.upenn.edu/epsd2/P121079 |
| http://www.ebl.lmu.de/library/CBS.11127 |