National Research Council (U.S.), National Science Foundation (U.S.). Division of Science Resources Studies, ebrary, Inc, Brown, P., & Henderson, P. (1998). Doctoral scientists and engineers in the United States: 1995 profile. National Science Foundation.
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Chicago-čujuhus (17. p.)
National Research Council (U.S.), National Science Foundation (U.S.). Division of Science Resources Studies, Inc ebrary, Prudence Brown, juo Peter Henderson. Doctoral Scientists and Engineers in the United States: 1995 Profile. Arlington, VA: National Science Foundation, 1998.
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MLA-čujuhus (9. p.)
National Research Council (U.S.), et al. Doctoral Scientists and Engineers in the United States: 1995 Profile. National Science Foundation, 1998.
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