RU1813834C
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Depth water intake
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SU1730344A1
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Hydraulic fill hydraulic structure
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SU1693170A1
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Berth
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SU1738918A1
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Folded assembled wall fencing of structure
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SU1678965A1
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Bottom water intake
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SU1666618A1
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Antifiltering screen
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SU1691327A1
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Method for treatment of sewage sediment
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SU1675471A1
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Method for erection of underwater hydraulic engineering structure
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SU1477828A1
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Water intake arrangement
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SU1469054A1
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Arrangement for releasing waste water into water flow
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SU1407917A1
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Apparatus for biochemical purification of waste water
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SU1321689A1
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Method of water flotation treatment
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SU1219839A1
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End sealing of pump rotor
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DD256234A3
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Device for ventilating fluids
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SU1182114A1
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Water intake for obtaining water from surface sources
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SU1118753A1
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Arrangement for pulsed flushing of dirt-trapping screens of submerged water intakes
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SU1108182A1
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Water head-generating structures
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SU1188266A2
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Floating clarifying water intake
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SU1084044A1
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Installation for thickening suspensions
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SU1168658A1
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Drain
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