Não informado. (1930). Review of Scientific Instruments. American Institute of Physics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Review of Scientific Instruments. Rochester, NY: American Institute of Physics, 1930.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Review of Scientific Instruments. American Institute of Physics, 1930.
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