00571cam a22001937a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093100001900102245006600121260008100187300001900268490002700287650003600314830002700350CHAP20220329135949.0971013s1969            r     00010     d  a44805  a45777  a49916  cCHAP00aUpton, Martin.12aA report on the economic potential for irrigation in Botswana  a(s.l.) :bUniversity of Reading. Department of Agricultural Economics,c1969  a74 p.b: ilus. 0aDevelopment studyv; 514aRecursos hidráulicosxAfrica.0 aDevelopment studyv; 5