00233nam a2200097Ia 4500008004100000082003900041100000800080245002900088260000900117300000900126140224s9999    xx            000 0 und d  aR058.7:631.8 1980 (083.4)FAO M0.29  aFAO  aFertilizer yearbook 1979  c1980  av.29