(1947). Accident experience iron-ore mines, Lake Superior district, 1940-45 / by Frank E. Cash.
Chicagoスタイル(17版)引用形式Accident Experience Iron-ore Mines, Lake Superior District, 1940-45 / by Frank E. Cash. 1947.
MLA(9版)引用形式Accident Experience Iron-ore Mines, Lake Superior District, 1940-45 / by Frank E. Cash. 1947.
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