Polentz, L. M. Engineering fundamentals for professional engineers examinations (3a ed.).
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPolentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPolentz, Lloyd M. Engineering Fundamentals for Professional Engineers Examinations. 3a ed.
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