00678cam a22002417a 4500003000500000005001700005008004100022010001000063011001000073020001500083035001000098040000900108082001700117110000800134245012600142260002400268300001100292650002200303650002800325700002600353700002900379700002800408CHAP20220817043553.0990817d1997    it      rnf   00110 eng d  a78746  a79718  a9251040079  a90111  cCHAP04a630.717bF312 aFAO10aImproving agricultural extension :ba reference manualc/ed. by Burton E. Swanson, Robert P. Bentz and Andrew J. Sofranko  aRome :bFAO,c1997.  a220 p.14aDesarrollo rural.14aExtensión agrícola.0 aBentz, Robert P.eed.0 aSofranko, Andrew J.eed.0 aSwanson, Burton E.eed.