00746nam a2200229Ia 4500001001100000005001700011008004100028020001500069043001200084050002000096090001700116245008900133260004200222300003700264504005700301650002600358650003500384650001700419650002600436830003900462999001500501000000054120251012174406.0  970409s1997    dcuab    b    000 0 eng  a0821339443  aw------00aS481b.W35 199700a630/.91322110aIntensified systems of farming in the tropics and subtropicscJ.A. Nicholas Wallis.   aWashington, D.C.bWorld Bankcc1997.   axiii, 203 p.bill., mapsc28 cm.  aIncludes bibliographical references (p. [167]-195).  0aAgricultural systems. 0aAgricultural systemszTropics. 0aDry farming. 0aDry farmingzTropics. 0aWorld Bank discussion papersv364.  c2523d2523