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1Published 1984Subjects: “...Coal Analysis Congresses....”
Conference Proceeding Book -
2Published 1944Subjects: “...Coal Analysis....”
Conference Proceeding Book -
3Published 1981Subjects: “...Coal Analysis Congresses....”
Conference Proceeding Book -
4Published 1993Subjects: “...Coal Analysis Congresses....”
Conference Proceeding Book -
5Published 1986Subjects: “...Coal Analysis Congresses....”
Conference Proceeding Book