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＜図書＞
Combination in the mining industry; a study of concentration in Lake Superior iron ore production

版	{1st AMS ed.}
出版者	New York : AMS Press
出版年	{1968}
大きさ	167 p. fold. map. 23 cm.
著者標目	Mussey, Henry Raymond, 1875-1940
件　名	Iron mines and mining -- Superior, Lake  全ての件名で検索 Trusts, Industrial -- United States  全ての件名で検索
一般注記	Series statement also appears as: Columbia University studies in the social sciences, 60. ＼ Reprint of the 1905 ed. ＼ Includes bibliographical references.

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