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Proceedings of the Engineers' Society of Western Pennsylvania
Appended to v. 12 are 15 articles on "methods for the analysis of ores, &c.," 101 p.
Proceedings of the Engineers' Society of Western Pennsylvania
Appended to v. 12 are 15 articles on "methods for the analysis of ores, &c.," 101 p.
Proceedings of the Engineers' Society of Western Pennsylvania
Appended to v. 12 are 15 articles on "methods for the analysis of ores, &c.," 101 p.
Membership List of the Engineers' Society of Western Pennsylvania
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