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Celkom 111 titulov
A Practical Treatise on Gas-light; Exhibiting a Summary Description of the Apparatus and Machinery Best Calculated for Illuminating Streets, Houses, and Manufactories, with Carburetted Hydrogen, or Coal-Gas, with Remarks on the Utility, Safety, and Genera
Friedrich Christian Accum
Innovation and the Communications Revolution: From the Victorian Pioneers to Broadband Internet
John Bray