Lowell, L. (1997). Sifting through science: Teacher's guide. Lawrence Hall of Science, University of California.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLowell, Laura. Sifting Through Science: Teacher's Guide. Berkeley, CA: Lawrence Hall of Science, University of California, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLowell, Laura. Sifting Through Science: Teacher's Guide. Lawrence Hall of Science, University of California, 1997.
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