De Witt, N. (1961). Education and professional employment in the U.S.S.R. National Science Foundation.
Citace podle Chicago (17th ed.)De Witt, Nicholas. Education and Professional Employment in the U.S.S.R. [Washington]: National Science Foundation, 1961.
Citace podle MLA (8th ed.)De Witt, Nicholas. Education and Professional Employment in the U.S.S.R. National Science Foundation, 1961.
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