1. Ministry of melioration and water industry (1987) The instructions on conducting the cadastre of meliorative condition of irrigated and drained areas and the technical conditions of hydromeliorative systems, USSR, p 27
2. Ikramov R (2001) Water-salt mode management principles in the irrigated area of Central Asia at water scarcity, Monograph, Tashkent, pp 192
3. Ramazanov A, Yakubov Kh (1988) Leaching and post sowing irrigation, Tashkent
4. Ikramov R (1986) The guide on the usage of drainage water for irrigating crops and washing of saline soil, Tashkent, p 71
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