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RU1803498C
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Working member of dragline excavator for cleaning channels of vegetation
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RU1788130C
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Movement joint
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RU1787373C
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Soil moisture content indicator
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RU1804751C
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Irrigation shutoff signaling device
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SU1757533A1
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Irrigation stop signalling device
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RU1807160C
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Drainage system
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RU1794983C
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Method for saline soil washing
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SU1728339A1
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Canal lining
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SU1730340A1
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Movement joint of canal lining
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SU1723236A1
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Channel facing deformation
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RU1818402C
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Water stream energy absorber
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SU1715942A1
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Method of sealing seams of channel facing
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RU1817961C
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Method of soil preparation before sowing cotton
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SU1723251A1
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Drain well
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SU1708993A1
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Method for sealing channel lining joints
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SU1715941A1
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Method for sealing joints canal lining
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SU1751263A1
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Apparatus for making mole drains
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SU1760004A1
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Device for cleaning of drain pipe from mud
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SU1727596A1
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Method for preparing field to be irrigated
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SU1724801A1
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Water intake
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