00631nam a2200109Ia 4500008004100000082004100041245021200082260002300294300000900317490003500326650016000361140224s9999    xx            000 0 und d  aTR 61.816.3:546.002:633.15(047.3) L0  aFertilizer management practices for maize, results of experiments in the isotopes; results of a 4 year co-ordinated research programme of the joint FAO/IAEA Division of Atomic Energy in food and agriculture.  aViennabIAEAc1970  a78p.  aTechnical report series no.121  aMaize-fertilizers,Maize-manures,Nitrogen fertilizers,Phosphorus fertilizers,Nitrogen isotopes-Physiological effect,Phosphorus isotopes-physiological effect