00585nam a2200205Ia 4500008004100000020001500041050001600056050001600072245005200088245007100140260001200211260002800223260000900251300001600260300002000276300001100296500002000307650003500327650001700362160303s9999    xx            000 0 und d  a9711007088  aFIL S 544.5  b.P5I58 1987 3aAn Introduction to extension delivery systems /  cedited by Jaime B. Valera, Vicente A. Martinez, Ramiro F. Plopino.  aManila:  bIsland Pub.House, Inc.,  c1987  a188 pages :  billustrations ;  c23 cm.  aIncludes index.  aAgricultural extension work --  xPhilippines.