BS 1016-104-104.4:1991

Заменен

Methods for analysis and testing of coal and coke. Proximate analysis, Determination of ash — 10 стр.

Заменен на

BS 1016-104.4:1998

ICS

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.