VARGHESE, P. (2012). ENGINEERING GEOLOGY FOR CIVIL ENGINEERS. PHI.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVARGHESE, P.C. ENGINEERING GEOLOGY FOR CIVIL ENGINEERS. N DELHI: PHI, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVARGHESE, P.C. ENGINEERING GEOLOGY FOR CIVIL ENGINEERS. PHI, 2012.
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