...It is a matter of catalysts...
Various 「Astounding Stories of Super-Science February 1930」
...Rogers, catalysts...
Various 「Astounding Stories of Super-Science February 1930」
...While there are a numberof other catalysts known, for instanceiron in reactions in which metallic magnesiumis concerned, the commonestare the metals of the platinum group...
Various 「Astounding Stories of Super-Science February 1930」
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