League of Nations. Economic, Financial, and Transit Dept, Staley, E., & Knorr, K. E. (1946). Raw-material problems and policies. League of Nations.
Lua i Stíl Chicago (17ú heag.)League of Nations. Economic, Financial, and Transit Dept, Eugene Staley, agus Klaus Eugen Knorr. Raw-material Problems and Policies. Geneva: League of Nations, 1946.
Lua MLA (8ú heag.)League of Nations. Economic, Financial, and Transit Dept, et al. Raw-material Problems and Policies. League of Nations, 1946.
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