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Erosion control device
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Antitorrent equipment
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Anti-erosion device
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Irrigating unit
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Anti-mudflow arrangement
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Counter-mud flow device
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SU1550054A2
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Well filter
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Antimudflow dam
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Counter-mudflow arrangement
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Method of consolidating clayey soil
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Guarding structure
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Method of cultivation of heavy soils
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Syphon
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Shore-protecting structure
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Made-up spur dike
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SU1483021A2
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Siphon water outlet
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Watering installation
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Method and apparatus for underwater placement of earth slope reinforcing webs
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Arrangement for protecting counter-seepage screen
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SU1416631A1
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Deep-well filter
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