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ES105678A1
|
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A process for preparing hydrocyanic acid.
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ES104921A1
|
|
A process for preparing cyanamides of alkaline earth metals and magnesium.
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|
ES104920A1
|
|
A process for preparing a nitrogenous fertilizer of alkaline reaction.
|
|
ES104919A1
|
|
A process for preparing calcium or magnesium cyanamide or mixtures thereof, with a high degree of purity.
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ES104850A1
|
|
A procedure for preparing metal cyanamides or mixtures containing them
|
|
ES104849A1
|
|
A process for preparing metal cyanamides or mixtures containing the same.
|
|
US1107926A
|
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Process of producing hydrogen.
|
|
CA120354A
|
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Apparatus for manufacturing nitrogen compounds
|
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GB190721786A
|
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Improvements in the Manufacture of Nitrogen Compounds with the Aid of Carbides and in Apparatus therefor
|
|
CA370012A
|
|
Combustible substance treating method
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