Whittier, W. H. (1917). An investigation of the iron ore resources of the Northwest. The University.
Chicago-viite (17. p.)Whittier, William Harrison. An Investigation of the Iron Ore Resources of the Northwest. Seattle: The University, 1917.
MLA-viite (8. p.)Whittier, William Harrison. An Investigation of the Iron Ore Resources of the Northwest. The University, 1917.
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