00262nam a2200097Ia 4500080002000000245004900020260002600069300001000095500004000105583001900145  a07.01.02 F686re  aRural extension : starting with the possible  bFAOaSantiagoCLc1991  a54 p.  aIncludes bibliographical references  c3/7/00kM2LMGR