Roy, C. H. (1988). The Operation And Maintenance Of Surface Finishing Wastewater Treatment Systems Clarence H. Roy. AESF.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRoy, Clarence H. The Operation And Maintenance Of Surface Finishing Wastewater Treatment Systems Clarence H. Roy. AESF, 1988.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRoy, Clarence H. The Operation And Maintenance Of Surface Finishing Wastewater Treatment Systems Clarence H. Roy. AESF, 1988.
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