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Method of anesthetic treatment of fish
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Device for regulating straightened beds of small fivers
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Waste water cleaning facility
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Method of determining ripeness of female fish for spawning
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Method of determining water toxicity
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Method of growing microalgae
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Method for enhancing fish viability at early stages of development
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Device for regulation of straightened bed of small rivers
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Method of stimulating development of hydrobionts
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Method of annihilating filamenting algae
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Method of determining toxicity of environment
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Arrangement for cleaning bottom of opened water pools
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Apparatus for controlling concentration of free carbon dioxide in water when studying life activity of hydrobionths
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Cultivator for microalgae
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Apparatus for biological monitoring of natural and waste water
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Method of determining the oxygen regime in basins subjected to water-bloom
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Method of enhancing vitality of carps
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Apparatus for growing water organisms
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Apparatus for growing small water organisms
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Installation for growing fish
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