(1987). Project summaries: FY 1987: Directorate for scientific, technological, and international affairs national science foundation. Washington.
Παραπομπή Chicago StyleProject Summaries: FY 1987: Directorate for Scientific, Technological, and International Affairs National Science Foundation. Washington, 1987.
Παραπομπή MLAProject Summaries: FY 1987: Directorate for Scientific, Technological, and International Affairs National Science Foundation. Washington, 1987.
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