U.S. Environmental Protection Agency. Principles of design and operations of wastewater treatment pond systems for plant operators, engineers, and managers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रU.S. Environmental Protection Agency. Principles of Design and Operations of Wastewater Treatment Pond Systems for Plant Operators, Engineers, and Managers.
एमएलए (9वां संस्करण) प्रशस्ति पत्रU.S. Environmental Protection Agency. Principles of Design and Operations of Wastewater Treatment Pond Systems for Plant Operators, Engineers, and Managers.
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