RYBCZYNSKI, W. Appropriate technology for Water Supply and Sanitation: Low-cost technology options for sanitation a state-of-the-art review and annotated bibliography. The World Bank.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRYBCZYNSKI, Witold. Appropriate Technology for Water Supply and Sanitation: Low-cost Technology Options for Sanitation a State-of-the-art Review and Annotated Bibliography. The World Bank.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRYBCZYNSKI, Witold. Appropriate Technology for Water Supply and Sanitation: Low-cost Technology Options for Sanitation a State-of-the-art Review and Annotated Bibliography. The World Bank.
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