000 00275nam a2200121Ia 4500
008 170101s1971 xx 000 0 und d
082 _a631.8 UNI
100 _aUnited Nations
245 0 _aFertilizers and Their Use
260 _c1971
300 _a64 p.
942 _2ddc
_cB
999 _c537116
_d537116