00549     2200205   4500001002100000005001500021035002000036007000300056008004100059082000800100084001400108100002100122245005000143260004500193300002300238650001400261700002400275700002200299990002200321INLIS00000000000227320240424062655  a0010-0424000019ta240424                f          0 eng    a630  a630 VAL a0 aValera, Jaime B.1 aAn Introduction To Extension Delivery Systems  aManila :bIsland Publishing House,c1987  a186 hlm. ;c21 cm. 4aPengairan0 aVicente A. Martinez0 aRamiro F. Plopino  a202031001.04.0011