00326nam a2200109Ia 450000500170000008000190001724501010003626000260013730000100016350000240017358300190019720260716043112.0  a07.01.02 F686r  aRural extension and agricultural development : a pragmatic alternative for a situation of crisis  bFAOaSantiagoCLc1991  a41 p.  aBibliography: p. 41  c3/7/00kM2LMGR