WARD, R. C. (1990). Design Of Water Quality Monitoring Systems Robert C. Ward; Jim C. Loftis And Graham B. Mcbride. Van Nostrand Reinhold.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWARD, Robert C. Design Of Water Quality Monitoring Systems Robert C. Ward; Jim C. Loftis And Graham B. Mcbride. Van Nostrand Reinhold, 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWARD, Robert C. Design Of Water Quality Monitoring Systems Robert C. Ward; Jim C. Loftis And Graham B. Mcbride. Van Nostrand Reinhold, 1990.
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