00622nam a2200169Ia 4500001001100000005001700011008004400028020001500072245012700087260004200214300002900256500002000285650004800305650004600353650003800399999001500437000002150720251012174641.0         1992    uk                       c  a086531425X10aFarming systems research and developmentbguidelines for Developing CountriescW.W.Shaner, P.F. Philipp [and] W.R.Schmehl   aColoradobWestview Press Inc.cc1992   axviii,414p.bill.c28cm.  aInclude indexs 00aAgriculturexResearchxDeveloping Countries00aAgriculturexsystemszDeveloping Countrie00aAgriculturezDeveloping Countries  c8053d8053