Rao P.N. (2022). Manufacturing Technology Foundry,Forming,and Welding Vol-1 (5th.). Mc Graw Hill Education(India)Private Limited.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRao P.N. Manufacturing Technology Foundry,Forming,and Welding Vol-1. 5th. Chennai: Mc Graw Hill Education(India)Private Limited, 2022.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRao P.N. Manufacturing Technology Foundry,Forming,and Welding Vol-1. 5th. Mc Graw Hill Education(India)Private Limited, 2022.
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