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2
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Neem pesticides in rice : potential and limitations / Lim Guan Soon and Dale G. Bottrell.
- International rice research institute (IRRI),
- 1994.
- Manila :
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The economic benefits of potable water supply projects to households in developing countries / Dale Whittington and Venkateswarlu Swarna.
- Asian Development Bank. Economics and development resource center,
- 1994.
- Manila :