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JP2000225397A
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Water cleaning material and water cleaning method using the same
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A material and a method for wastewater treatment
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Sowing tool and its production
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Seed-sowing card
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Method for preserving fruit
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Treatment of waste mushroom bed
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Soil system
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Method for treating beancurd refuse
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Preparation of feed
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Production of mushroom culture medium and unit therefor
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Artificial soil
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Artificial soil
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Artificial soil
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Method and apparatus for cultivating mushrooms
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Production of feed
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Method for growing tree containing germanium and/or glycyrrhizin and utilization thereof
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Crude drug raw material having medicinal effect on aids
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Mushroom culture method and apparatus
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Manufacture of sawdust
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