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| 1 | Grégoire, J.-P., Archives administratives sumériennes, Paris 1970 |
| 2 | Civil, M., The Farmer's Instructions. A Sumerian Agricultural Manual, Aula Orientalis. Supplementa 5, Sabadell 1994 |
| http://cdli.earth/P100050 |
| http://collections.louvre.fr/recherche?q=%22AO+19753%22 |
| http://oracc.museum.upenn.edu/epsd2/P100050 |