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Preliminary Survey of Operating Data for Commercial Bituminous Coal Mines for the Years 1943, 1944, and 1945
Anson O. Courter
出版Office of Temporary Controls, Office of Price Administration, Economic Data Analysis Branch, 1947
URLhttp://books.google.com.hk/books?id=DLS1i9HoZXgC&hl=&source=gbs_api
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