00767nam0-22002771i-450-99000168438040332120051012162403.0000168438FED01000168438(Aleph)000168438FED0100016843820030910d1969----km-y0itay50------baengIrrigation in BotswanaMartin UptonReadingUniversity - Department of Agricultural Economics196976, XVII p.25 cmIrrigazione631.7Upton,Martin67998ITUNINARICAUNIMARCBK99000168438040332160 631.7 B 4841897FAGBCFAGBCIrrigation in Botswana371390UNINA