000 00312nam a2200133Ia 4500
008 130223s9999 xx 000 0 und d
080 _a631.8
245 _aEfficient use of fertilizer
260 _aRome
260 _c1960
440 _aFood and Agriculture Organization
901 _pS727
942 _cB
_2udc
999 _c121321
_d121321