Barber, H. B. Penetrating Radiation Systems and Applications III. SPIE Digital Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarber, H. Bradford. Penetrating Radiation Systems and Applications III. SPIE Digital Library.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarber, H. Bradford. Penetrating Radiation Systems and Applications III. SPIE Digital Library.
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