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AU1154113B
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Method of manufacturing double superphosphtes
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US1084774A
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Method of obtaining nitrogen and making compounds therefrom.
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US1084856A
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Method of manufacturing phosphoric acid.
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US1078887A
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Method of manufacturing double superphosphate.
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US1076499A
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Process for separating phosphoric acid from natural phosphate.
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US1062869A
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Method of manufacturing an ammonium superphosphate fertilizer.
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US1040081A
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Method of drying monocalcic phosphate and the like.
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US1076497A
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Process for separating phosphoric acid from natural phosphates.
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GB190912966A
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Improvements in Processes for Producing a Silicide of an Alkaline Earth Metal.
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US963345A
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Metallurgical process.
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US934379A
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Process of producing calcium silicid.
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US1018186A
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Process of obtaining alkali-metal compounds from minerals containing alkalis.
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AU496106B
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Improvements in combined whistling, belland lighting buoys
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AU180804B
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An automatic gas buoy
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