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1由 Somers, Gerald George### CRL customization ### ?> ### Add publisher and desc details ### ?>
出版 1953Morgantown, Bureau of Business Research, Collete of Commerce, West Virginia University [1953]vii, 82 p. tables, 28 cm.主题: “...Collective labor agreements Coal mining industry West Virginia....”
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2由 Heide, Hans-Joachim, 1925-### CRL customization ### ?> ### Add publisher and desc details ### ?>
出版 1962[Münster? : s.n.], 1962.xii, 145 p. ; 21 cm.主题: “...Collective labor agreements Coal mining industry Germany North Rhine-Westphalia....”