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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र-. Environment and Solid Wastes: Characterization, Treatment and Disposal. Woburn: Butterworth, 1983.
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चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.