Daily Tonnage Output of the Pick Miner1 By ETHELBERT STEWART, United Stated Commissioner of Labor Statistics. production per man per day expressed in tonnage of coal is too commonly presented in statistical

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Date: 2016-08-12 06:47:03		Daily Tonnage Output of the Pick Miner1 By ETHELBERT STEWART, United Stated Commissioner of Labor Statistics. production per man per day expressed in tonnage of coal is too commonly presented in statistical Add to Reading List Source URL: www.basvanleeuwen.net Download Document from Source Website File Size: 257,31 KB Share Document on Facebook