Solid mineral fuels -- Major and minor elements in hard coal ash and coke ash -- Wavelength dispersive X-ray fluorescence spectrometric method— 20 стр.
75.160.10 Solid. Including coal products, coke, peat, wood, derivatives of coal pyrolysis, etc. / Твердое топливо. Включая угольные продукты, кокс, торф, древесину и т.д.
