Federal funds for research, development, and other scientific activities. National Science Foundation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFederal Funds for Research, Development, and Other Scientific Activities. Washington: National Science Foundation.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFederal Funds for Research, Development, and Other Scientific Activities. National Science Foundation.
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