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1by Bernard, T. E. (Thomas E.)Subjects: “...Mine rescue work Equipment and supplies....”
Published 1979
Government Document Book -
2Published 1983Subjects: “...Mine rescue work Equipment and supplies Testing....”
Government Document Book -
3Published 1986Subjects: “...Mine rescue work Equipment and supplies Testing....”
Government Document Book -
4by Stengel, Jerry W.Subjects: “...Mine safety Equipment and supplies Testing....”
Published 1982
Government Document Book -
5by Kyriazi, NicholasSubjects: “...Mine safety Equipment and supplies Testing....”
Published 1984
Government Document Book