Holmes, H. N. (1942). Strategic materials and national strength. Macmillan.
Lua i Stíl Chicago (17ú heag.)Holmes, Harry N. Strategic Materials and National Strength. New York: Macmillan, 1942.
Lua MLA (8ú heag.)Holmes, Harry N. Strategic Materials and National Strength. Macmillan, 1942.
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