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Organization, operation and maintenance of irrigation schemes / by J.A. Sagardoy ; with contrib. from A. Bottral and G.O. Uittenbogaard.
- FAO,
- 1982.
- Rome :
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Fourth meeting of the Eastern African sub-committee for soil correlation and land evaluation, Arusha, Tanzania, 27 October-4 November 1980 / [contrib. by J.K. Samki...et al.].
- 864
- FAO,
- 1982.
- Rome :
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Vegetables / by J. Toll and D.H. van Sloten.
- IBPGR. Secretariat,
- 1982.
- Rome :