000 00318nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a631.8(036)
_bDEG
100 _aDEGEUS, J G
245 0 _aFertilizer guide for food graiins in the tropics and subtropics
260 _aZurich
650 _aFertilizers
942 _cBK
999 _c21581
_d21581