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Device for making antifrictional layer around pile
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Fishway
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Passing device for fish from upper pool of hydroscheme to lower pool
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Device for barring outline of earthwork for its aggradation
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Method for erecting asphalt-concrete wall
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Fish ladder
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Valve
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Pile driving unit
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Ground punching unit
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Device for well drilling
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Fish protection device
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Device for manufacturing cast-in-place hollow piles
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For cleaning particulate substratum layed on fish- rearing reservoir bottom
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Arrangement for spawning fish
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Transport and power hydrauluc unit
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Method for determination of physical and mechanical properties of rock mass of given volume
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Method of laying of cable lead-in into transformer
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Arrangement for spawning fish
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Fish-passing facilities
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Method for erecting buoyant structure
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