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2
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Duckweed aquaculture : a new aquatic farming system for developing countries / Paul Skillicorn, William Spira, and William Journey.
- World Bank,
- 1993.
- Washington, DC :
-
Water resources management in Asia / Harald D. Frederiksen, Jeremy Berkoff, and William Barber.
- World Bank,
- 1993.
- Washington, DC :