McHugh, J. (1980). Alexander Holley and the makers of steel. Baltimore: The Johns Hopkins University Press.
Παραπομπή Chicago StyleMcHugh, Jeanne. Alexander Holley and the Makers of Steel. Baltimore: The Johns Hopkins University Press, 1980.
Παραπομπή MLAMcHugh, Jeanne. Alexander Holley and the Makers of Steel. Baltimore: The Johns Hopkins University Press, 1980.
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