The oxygen content of the gases from roasting pyrites

Lewis T. Wright
1914 Journal of the Society of Chemical Industry  
in 11. Tlic results of thc two trinls wcrc :-NiO, 23.70 and 28.20 per cont.
doi:10.1002/jctb.5000330404 fatcat:wooytllzobhszh5xxy5dopnz4e