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2
-
Arabic water-clocks / by Donald R. Hill.
- 681.111 H6451
- Hill, Donald Routledge.
- University of Aleppo, Institute for the History of Arabic Science,
- 1981.
- Aleppo, Syria :
-
Soil water and nutrient research 1979-80 / by the Farming systems research program.
- ICARDA,
- 1981.
- Aleppo, Syria :