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3
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Influence of crop profitability, market, labour and land on smallholder cropping systems in rubber growing areas of Sri Lanka / T.M.S.P.K. Thennakoon.
- British thesis service,
- 2002.
- Boston Spa :
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The effects of intercropping on weeds and weed management in maize growing in Kenya / by J. Mukami Maina.
- British thesis service,
- 1997.
- Boston Spa :
-
Modelling the development of soil salinity on small farms in Oman growing irrigated crops using saline groundwater / by Asadullah Al-Ajmi.
- British thesis service,
- 2000.
- Boston Spa :