000 00314nam a2200121Ia 4500
008 170101s1980 xx 000 0 und d
082 _a631.4 UNI
100 _aUnited Nations
245 0 _aSoil and Plant Testing as A Basis of Fertilizer Recommendations
260 _c1980
300 _a100 p.
942 _2ddc
_cB
999 _c750416
_d750416