Characteristics of doctoral scientists and engineers in the United States, 1973 : a report based on the National Science Foundation's Manpower Characteristics System
著者
書誌事項
Characteristics of doctoral scientists and engineers in the United States, 1973 : a report based on the National Science Foundation's Manpower Characteristics System
（Surveys of science resources series）
National Science Foundation, [1975]
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注記
Chiefly tables
"NSF 75-312"