RU1784461C
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Method and device for construction blocks and units repellent impregnating
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SU1689504A1
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Method for controlling moisture content in soil
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SU1528856A2
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Drainage system
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SU1523632A1
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Drainage system
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SU1451212A2
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Valve-type closure
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SU1541345A1
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Drying system
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SU1387921A1
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Method of washing salinated soils
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SU1490262A1
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Method of determining soil seepage factor
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SU1342974A1
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Mine spillway
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SU1463845A1
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Stream-guiding arrangement
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SU1392186A1
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Water-purifying dam
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SU1269772A1
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Arrangement for catching fish in water basins with fish
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SU1192871A1
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Arrangement for cleaning tube cavity
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SU1178925A1
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Hydro-electric generating set
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SU1126655A1
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Fishing basin structure
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SU1165727A1
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Method of simulating seepage flow of hydraulic structure
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SU983211A1
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Freezing-proof hydrant
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SU986494A1
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Apparatus for power breaking of soil samples
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SU727772A1
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Apparatus for determining ice layer thickness
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SU763585A1
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Device for measuring seepage rate of soil
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