00467nam a2200133Ia 4500008004100000082001900041100002900060245007200089260002000161300001300181490005000194600002700244650006200271140224s9999    xx            000 0 und d  a374:63(6+5) M4  aBlanckenburg, Peter Von.  aAgricultural extension systems in some African and Asian countries/  aRomebFAOc1984  aiii,75p.  aFAO Economic and Social Development Paper, 46  aPeter Von Blanckenburg  aAgricultural Extension-Africa,Agricultural Extension-Asia