BS-6127-4 › Complete Document History
Petrographic analysis of bituminous coal and anthracite. Method of determining microlithotype, carbominerite and minerite composition
Obsolete Revision Information: |
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REPLACED BY BS-ISO-7404-4 - WITHDRAWN IN 2017 - Sept. 18, 2017
1990 EDITION - METHOD OF DETERMINING MICROLIT - Feb. 28, 1990 |