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Keywords: Wilson gas producer.jpg en Wilson coal gas producer picture water botton type to provide à gasproof way of removing the ashes fr Photo d'un générateur de gaz de houille de Wilson avec un fond humide qui sert comme évacuation étanche des cendres http //www archive org/details/principlespracti00macfrich California Digital Library 1917 Walter Macfarlane PD-old Images from The principles and practice of iron and steel manufacture by W Macfarlane Coal gasification |