AMERICAN SOCIETY OF CIVIL ENGGERS. (1978). ENVIRONMENTAL ENGINEERING. A S C E.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAMERICAN SOCIETY OF CIVIL ENGGERS. ENVIRONMENTAL ENGINEERING. NEW YORK: A S C E, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAMERICAN SOCIETY OF CIVIL ENGGERS. ENVIRONMENTAL ENGINEERING. A S C E, 1978.
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